- 2 days ago
中美洲国家哥斯达黎加频发的美洲鳄袭击人类事件，并由专家团队展开实地调查, 与美国佛罗里达州美洲鳄极少袭击人类的习性不同，哥斯达黎加的美洲鳄近年来频繁发生杀人, 食人事件. 带领探险团队深入当地，调查鳄鱼行为异常的原因，并探寻解决人鳄冲突的办法.....
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AnimalsTranscript
00:08The geese in Gosta Riga are mysterious
00:10Many people want to go there to find out what it is.
00:14Why do the geese in Gosta Riga frequently attract people?
00:17What's wrong with the geese there?
00:24Grab it, grab it!
00:25His mouth opened
00:26The geese here have exhibited behavioral changes.
00:28The conflict between humans and geese must be resolved.
00:38Alligator experts from southern Florida told
00:42people
00:43The local geese almost never kill ten people.
00:47This is indeed the truth.
00:51But in various parts of Gosta Riga
00:54However, there are a large number of confirmed cases.
00:56Case of a geese killing ten people
01:00For a long time
01:01I work in alligator rescue in Florida, USA.
01:05Although the work is dangerous
01:07But we believe that through hard work...
01:08Humans and crocodiles can coexist peacefully.
01:13I've always been particularly interested in dangerous animals.
01:15Especially those that are easily overlooked.
01:18Crocodiles are one of them.
01:20They were like living dinosaurs.
01:24For many years
01:25I have been capturing and rescuing crocodiles
01:28Catching crocodiles is not as difficult as you might imagine.
01:30However, extensive experience and professional skills are required.
01:34It would be better if there were helpers.
01:37Catching crocodiles is very dangerous
01:39You are in the crocodile's territory
01:41We must figure out what they are thinking.
01:43Be careful your hand might get bitten.
01:46Caroline and I did not have an easy job.
01:48Therefore, very few people would do the same thing as us.
01:51Catching alligators in the water
01:53Requires a complete set of professional skills
01:55You yourself need to become an alligator
01:56Only then can you deal with alligators in the water.
01:58Even the slightest oversight can lead to the loss of all previous efforts.
02:00The top priority of our work
02:02It's to prevent being bitten.
02:05This is a bit crazy, but there's nothing we can do about it.
02:09I was in Florida, USA, with alligators.
02:11We've been dealing with each other for over twenty years
02:12He's quite knowledgeable
02:16But the situations in Costa Rica and Florida are completely different.
02:19American alligators are also found in Florida.
02:21But the quantity is small.
02:22The distribution is also relatively scattered.
02:23American crocodiles are found all over Costa Rica.
02:25And most of them are large in size.
02:27strong and powerful
02:28Very combative
02:30Over the past two decades
02:31Costa Rica has a relatively fast population growth.
02:33The space became very tight.
02:36The reason is very simple.
02:37A large population and limited land inevitably lead to conflict.
02:40The incident of an alligator spitting on a person occurred here.
02:42There were even cases of injured people dying.
02:47The Costa Rican government is under increasing pressure.
02:49They hope to improve the entire ecosystem.
02:52That's why we're here.
02:57We were invited to join a research team composed of biologists.
03:00The main research task is to acquire and evaluate important data about the American crocodile.
03:04according to
03:06This is exactly what I've been dreaming of.
03:09Why are the American crocodiles here so aggressive?
03:12Why do alligator bite incidents occur so frequently in Costa Rica?
03:15We want to find out the truth.
03:24We have too many questions
03:25It's impossible to get all the answers at once.
03:28We want to connect some of our findings.
03:30This will move the work forward.
03:33Our first step is to work with the research team.
03:35Meeting at the research institute in Palobald National Park
03:42Can you introduce Chris to me?
03:44Chris Murray is a doctoral student at the University of Macau.
03:47He has been doing research here.
03:50She is meticulous in her work and very intelligent.
03:52Unlike most people who do scientific research
03:54He has extensive practical experience
03:56Chris, like us, possesses practical combat skills.
03:59Possessing theoretical knowledge
04:01He is a polymath
04:02He's awesome, really awesome.
04:06Hello
04:06Hello, how have you been lately?
04:08Long time no see! It's so nice to see you.
04:09Hi Caroline, I'm Chris.
04:11Both are fine.
04:13Hello
04:14Hello, nice to meet you
04:15Welcome to Palobald National Park
04:18With the strong support of the government and local people, Gesdariga
04:22It has become a leader in ecotourism in Central and South America.
04:25American evil played a unique role in it.
04:31Some people want to eliminate evil in the Americas
04:32They felt there were too many evils in the Americas.
04:35They also attacked livestock.
04:36It seriously affects people's livelihoods.
04:38Some people, however, benefit from the existence of evil in the Americas.
04:41Hoping to coexist peacefully with them
04:43We cannot disregard people's livelihoods.
04:45We also do not want people's lives to be threatened.
04:48I know some people who have been studying the evils of the Americas for the past three or four decades.
04:50They were all eager to work here.
04:52Since Chris was able to get the opportunity to work here
04:55This fully demonstrates his ability.
04:57The government of Gestaliga highly approves of and trusts Chris.
05:00He was considered the perfect candidate for the job.
05:04In Gestaliga for many years
05:06Related research institutions have done a lot of work on the Americas.
05:09They discovered that the proportion of male American malignancies was relatively high here.
05:12This problem is very prominent.
05:13Although other regions
05:15Other types of vicious fish can also exhibit this behavior.
05:17But the situation is far less serious than here.
05:20We are unsure exactly what happened.
05:22What we need to do is find out the exact cause.
05:24Another problem is the evil in America here.
05:26The increasing conflict with humans
05:27Yes, once you hear about it, you'll want to find out more.
05:30Is the proportion of male American malignant mammals still high here?
05:32What caused this?
05:33Are the American malignancies more dispersed or more concentrated here?
05:36We hope to understand as much as possible
05:38Specific reasons for the higher proportion of male American malignant tumors
05:41To infer the timeframe in which this phenomenon might occur.
05:44Is it because female American malignant tumors have a high mortality rate?
05:47Or is it simply due to an overabundance of males?
05:50I met Mahmoud Sasa three years ago.
05:53He told me
05:54Research institutions related to the Americas
05:55The problem of gender imbalance in the Americas has been discovered.
05:58I have decided to add some hypotheses regarding the gender imbalance in the Americas.
06:01One verification
06:02We conducted a series of research investigations on American evils.
06:07Chris and Mike's work was a crucial part of this.
06:15Does your research involve the relationship between local people and the Americas?
06:19The conflict between the local people and the evil forces of the Americas is quite complex.
06:22We need to consider it from multiple perspectives.
06:24We collected some examples of mutual influence.
06:26Human activities will have a negative impact on the Americas.
06:29Similarly, in certain situations, the Americas can also have negative impacts on humanity.
06:34ring
06:34The people here generally hope to live peacefully with the Americas.
06:38Yes, people need this too.
06:39Ecotourism is a major industry in Costa Rica.
06:42Clearly, the Americas are infamous for their evil.
06:45Ecotourism has attracted a large amount of investment.
06:48Therefore, humanity and the Americas should coexist harmoniously.
06:50We need to work together to come up with a solution.
06:52We invited you here.
06:54Because you have been in the southern part of Florida for a long time
06:58Mediating the Relationship Between Short-Tipped Evil and Humans
07:01You have rich practical experience
07:03We'd like to hear your thoughts.
07:05How should we deal with the problems we are currently facing?
07:18Hello, I'm Chris.
07:19I am Jason
07:20I am Mike
07:21Nice to meet you, Jason
07:22Hello, nice to meet you
07:23What are we going to do today?
07:24We're going to see a huge American evil
07:26Very good
07:26Its length is between 3.6 meters and 4.2 meters.
07:29Weighing approximately 900 kilograms
07:31Very good
07:31Are you ready?
07:32Of course, you can set off once you're ready.
07:34I'm better.
07:35Let's go.
07:42Ecotourism is one of Costa Riga's main sources of income.
07:45Jason and his group sailed the tourist boat down the river.
07:49An American monster will suddenly appear beside the ship.
07:51Tourists can see the Americas up close
07:54Such an experience will be unforgettable for a lifetime.
07:57There is an American evil
07:58Jason, look!
07:59Right on the riverbank
08:02Jason and his group are very familiar with evil in the Americas.
08:04He is an expert familiar with the evil deeds in the Americas.
08:06So they can go into the water.
08:07If you know how to do it
08:09You could also try what Jason did.
08:11Especially for those who are unfamiliar with the atrocities in the Americas
08:14Jason's way of dealing with evil in America
08:16This will undoubtedly leave a deep impression on them.
08:18And you can learn a lot from it.
08:20If the American flea was previously fed
08:21They will then approach humans.
08:23I've been attacked by short-sighted thugs many times before.
08:25So I know
08:26The behavior of animals fed to the American scavenger will change.
08:29They would ask for food when they saw people.
08:30It's hard to say whether Jason and his group did it intentionally or harmfully.
08:34It is obvious
08:35They made the evils of the Americas no longer fear humanity.
08:37It makes it easier for them to target people walking along the river.
08:39They believed they could get food from there.
08:43In fact, before coming here
08:44I've seen the American superstar in this river on video websites.
08:48evil
08:48I noticed that they had clearly been fed by humans.
08:55I'm putting it down.
08:57Put the chicken down
08:58Here
08:59Further down
09:01Further attract their attention
09:02Okay, let's begin.
09:04We can post it on video websites.
09:07Knock on his head. That's it.
09:09That's right
09:12Pull him up!
09:19Another American evil wins
09:21If you walk along the shore
09:22American evils that have never interacted with humans will not notice you.
09:25He will swim directly
09:27If he had interacted with humans
09:29Someone fed him
09:30He will follow you.
09:37People here believe that incidents of evil sitting in the Americas are on the rise.
09:40We will conduct an investigation in the surrounding area.
09:42Interviews with several attack victims
09:44Let's see what we can find.
09:46Can you tell me?
09:47If these American evils enter your home
09:49Harm your livestock
09:51What are your thoughts on evil in the Americas?
09:53American evil is a scourge.
09:55Their tracks are not easy to find.
09:58Therefore, people always have to live in fear.
10:01Because you don't know when they will launch an attack.
10:06You were attacked in the Americas.
10:07Yes
10:08I was attacked.
10:09One afternoon, a friend and I went fishing on the island.
10:14I didn't notice the American evil.
10:16When I found out
10:17Suddenly, he bit my calf.
10:21Fresh blood gushed from the wound
10:23The speed of the American evil is extremely fast.
10:27You accidentally
10:28They will bite you.
10:32From here to the upper reaches of the Bebedro River
10:35American ferocious beasts frequently attack people and even eat them.
10:40If a 3.6-meter-long giant...
10:44American Evil
10:44It's difficult for you to find someone to help you get rid of it.
10:55Analyzing the cause of a problem is one thing.
10:56Coming up with a testing method is another matter.
10:59What we need to do is capture the evil of the Americas.
11:01Then distinguish their genders.
11:03Dimensions
11:04twitch
11:05Detection of physiological indicators
11:07We also need to assess the sex hormone levels.
11:09With the help of hormone levels
11:11Inferring the reasons for their gender imbalance
11:13The investigation site has been reached.
11:19One of the main reasons Chris invited Caroline and me here was
11:22Our method of capturing evil in the Americas is unique.
11:24We don't know if we can succeed here.
11:26Paul, we've arrived at the canal.
11:28Paul's method is unique.
11:30He will dive into the water
11:32Deep into the habitat of evil in the Americas
11:34Enter their world
11:36Capture them in a way that avoids excessive tension in the Americas.
11:41This is impressive.
11:45This is a very long canal.
11:46We saw many traces left by vicious fish.
11:49American evils are very active here.
11:50If there is an American evil here
11:52I should be able to see
11:53What can we learn from these American evils?
11:55In fact, we can get a lot of information from them.
11:58I'm going to go into the water to find them.
11:59I'm going to jump in.
12:01Caroline, please keep an eye on things for me.
12:02We will help you keep an eye on your surroundings.
12:06Paul's actions were crazy.
12:08I won't deal with the evils of America like he did.
12:14Costa Rica is the ultimate destination for American hooliganism enthusiasts in the Western Hemisphere.
12:18land
12:19They all wanted to come here to explore the mysteries of evil in America.
12:23I'm going to jump in.
12:24If there is American evil
12:25You will see him
12:26Be careful not to get bitten
12:27People in the region have an increasingly negative impression of the Americas.
12:32The number of violent attacks in the Americas may also increase.
12:35This is exactly what we need to study.
12:37The government's considerations are based on scientific research.
12:38Allow us to delve into these regions to capture American evils
12:42Collect data for exploration
12:45Throw a rock at my head if anything happens.
12:47I need to get your attention no matter what.
12:50I wonder what happens if a person is in the water.
12:53Will this make the Americas more aggressive?
12:55Very likely
12:56But you'll only know once you get into the water.
12:58Right there
13:00There is an American evil there
13:01If I see the evil of America
13:02Should we arrest him?
13:03I see you are chasing him.
13:05Yes
13:06We are used to pulling American poisonous plants out of the water.
13:08If the water is clear, then it's easy to handle.
13:09I will dive into the water
13:11American fleas found underwater or on the surface
13:13Stay by his side and trap him
13:15Pull him up again
13:16However, this area is quite difficult.
13:18The water around these fields is very murky.
13:20We cannot dive into the water.
13:22A three-meter-long strip of American evil might be located here.
13:25But you can't see it at all.
13:28Canals throughout Costa Rica
13:29It is the lifeblood of this country.
13:31It is also a major transportation route in the Americas.
13:33In addition to growing rice in this area, people also cultivate rice.
13:36Sugarcane is also planted in large quantities.
13:39farmed fish
13:40These all obviously require water resources.
13:43The evil forces of America will use the canals here.
13:45Get up close to the workers here
13:48They pose a threat
13:52Yes
13:52If there are workers and American evil in the ground at the same time...
13:55The situation becomes unpredictable.
13:56Yes
13:57Look at the river below
13:58There are both American evils and monsters there.
14:00There are also workers there.
14:05American evil is common in canals.
14:07Large numbers of American scorpions have appeared in the canal.
14:09It has been a while.
14:10You have to go around it
14:11That way you won't step on them.
14:13You won't get bitten
14:17Evil and humans coexist in the same region of the Americas.
14:20Mutual influence is inevitable
14:22Unfortunately
14:23If the worker is outside Jimmy
14:25The American evil was discovered.
14:26Then they will find it difficult to concentrate on their work.
14:29Because this place is inhabited by the American evils.
14:30They could appear at any moment.
14:33For workers
14:34Being in such a work environment is extremely dangerous.
14:36I can understand why they want to drive the evil out of America.
14:39Sometimes they do it themselves.
14:42We want to step in and help them solve this problem.
14:45However, it is very difficult.
14:46How can we capture these evils of the Americas?
14:49The situation here looks very similar to that of Florida in the United States.
14:52Florida also has a very well-developed canal system.
14:55These mortal evils of the Americas also lurk in homes and... via the canals.
14:58Near the business district
14:59We have already captured some American ferocity in this canal.
15:02This canal extends downstream for about ten kilometers.
15:06It will flow into the Tempiske River
15:08In this area
15:10Most of the American scourges nested in the lower reaches of the canal.
15:19We found a nest by the canal.
15:22We're going there to capture the newly resurrected American Evil Babies.
15:25And determine their lives
15:28Data obtained from the American Evil Baby
15:30This is a crucial step for us.
15:32This is key to proving the severely high proportion of male American malignant tumors.
15:39In order to capture the American evil baby
15:40We had to board a rather unreliable ship
15:43Not a safe boat
15:46I don't know what will happen there.
15:48The four of us barely managed to board a swaying boat.
15:51Sailing into the canal
15:52travel along the river
15:53Chris decides to go find the American Evil Baby
15:58There are American evil babies
16:00Right here
16:04Because evil mothers in the Americas are usually nearby.
16:08Therefore, the capture operation carries risks.
16:11Are you ready?
16:12Yes
16:13Help me
16:14This water is really deep.
16:15Caught a
16:25Tonight we're digging up the lair of American evil in Costa Rica.
16:28Our research team is searching for the American Evil Baby.
16:31After catching them, their gender will be determined and the data recorded.
16:34Are you ready?
16:35Yes
16:35This water is really deep.
16:39Caught a
16:42I used to go to the Swamp State and visit the American Baby.
16:44First, we need to make sure his mother isn't around.
16:46Because he usually stays near the children.
16:48So be careful.
16:50There's something here.
16:51That's terrifying.
16:54I have always been very careful
16:56What's wrong
16:57I have no idea
16:58real
16:58I didn't find anything.
16:59What we need to do is use flashlights to probe the lair of the American evil.
17:04The eyes of the evil in America reflect light when illuminated.
17:07This makes it easier for us to find them.
17:09There's an American baby in front.
17:10Caroline
17:11Capture them
17:11Capture them
17:13I caught one
17:17During the incubation period
17:19Temperature is one of the key factors determining the sex of American baby puppies.
17:24We can monitor the thermal dynamics within the American necropolis.
17:29Where is the lair of evil in the Americas?
17:30Over there
17:33We will compare the results of the gender identification with the predicted results.
17:36To test the accuracy of sex prediction based on temperature.
17:39This important hypothesis helps to identify male American malignancies with a high proportion of [unclear].
17:43source
17:44After we brought these American monster babies back to the lab
17:46Gender identification and size measurement will be performed for convulsions.
17:49To obtain relevant information
17:50Put them back the next day
17:55Palo Belder Institute of Biology
17:57Located within Palo Belde National Park
18:00It is the research facility we established.
18:03It is also the base for our project.
18:12That one is male.
18:14Number 310
18:17From the fourth bedroom
18:20Mike wants to use it to draw blood.
18:22We need to use the extracted blood plasma
18:25Measuring its magnetic hormones
18:28High ketones
18:29Levels of indicators such as cortisol
18:32The actual sex of this litter
18:33Gender inferred from temperature
18:36What are the comparison results?
18:37This nest
18:37There should have been more female babies.
18:40But the results showed
18:41There are still more males.
18:42It is obvious
18:43Other factors are also at play.
18:45So our next step is to study
18:47Does the nest contain some kind of ecotoxin?
18:50It may affect the thermal dynamics of the egg.
18:54Do you have a control group?
18:55The American alligators in the group are unaffected by the net chemical flow.
18:58Living in a very primitive place
19:00For research purposes
19:03Of course, we need to find one.
19:05Areas unaffected by any human factors
19:08Sergio has a good suggestion
19:10I think we could go to La Bercanã.
19:13It was a remote place.
19:15It's very, very far from here.
19:18There's not much farmland.
19:19It is a rare natural body of water.
19:23You should be able to give it a try.
19:36Few people have seen the La Portcana alligator.
19:40The American crocodiles there haven't seen many humans either.
19:42It was a very remote and pristine place.
19:53It was quite a long journey to get here.
19:55But it was all worth it.
19:57This place is rarely visited.
19:58It is a very suitable habitat for American crocodiles
20:02The data you obtained from the American alligators here
20:04Almost the most primitive
20:06Here, the American alligators have become what nature wanted them to be.
20:10Use the data here as a control group
20:12It can be compared with the data we obtained from fields and rivers.
20:15Has this soil become wet in the last week or two?
20:18It was three days ago
20:19We don't know what will happen.
20:20First, prepare to capture the American alligator.
20:22Clear
20:22We set off.
20:23OK
20:33We didn't see many American crocodiles.
20:35This is strange.
20:36Because I heard this is a habitat for American alligators.
20:38During the rainy season
20:39Hundreds of American crocodiles live here.
20:42But conditions are harsh during the dry season.
20:44We've always been curious about how these crocodiles will cope.
20:47Will American crocodiles come here?
20:49Yes
20:50Summer cotton is one of the methods American alligators use to cope with the dry season.
20:53American crocodiles primarily survive the dry weather by feeding on summer cotton.
20:58They hide in relatively cool and humid environments.
21:01Slow down the body's metabolism
21:04The water level here has just risen again.
21:06There are clearly no American crocodiles now.
21:08Because the weather here was hot and water was scarce before.
21:11In order to survive this terrible dry season
21:13The American crocodile left
21:14It will take two or three months now.
21:16Only then will they return here.
21:19We continued on our journey, searching...
21:21But not even a single crocodile was seen.
21:27Rocket Class
21:29Chris
21:30Paul Caroline
21:31Come here, everyone.
21:32Take the lock
21:33careful
21:36careful
21:37careful
21:38come over
21:40Look what's there?
21:42Oh my god
21:42There
21:43This is exactly the size of a puddle in Xixiang.
21:45In this small puddle
21:47There was a two-meter-long American crocodile hidden there.
21:50Do you think this might be a...
21:51Are they American crocodiles that just finished their summer cotton harvest?
21:52Yes
21:53It might be about to turn down.
21:54It was in the grass
21:55The body is very wet
21:56It is arching upwards.
21:59This is a strong American crocodile.
22:00I may have gotten too close to this American crocodile.
22:02About two meters away
22:03But it has never been discovered.
22:05We are walking through a minefield infested with alligators.
22:08careful
22:09It's not the only American crocodile here.
22:11We are now surrounded by American alligators.
22:12Are there American crocodiles right beneath our feet?
22:15We began to realize
22:16American crocodiles are right under my feet
22:18Just thinking about the mud thirty centimeters below my feet
22:20There might be an American crocodile there.
22:22An American crocodile that survived water shortage
22:26Everyone felt it was very strange.
22:27How to take action
22:28Pull it out from here
22:29Drag him over there
22:31I know how short-striped alligators react.
22:33American alligators are faster than crocodiles.
22:35If you step on them
22:36The time left to escape was even shorter.
22:39so
22:41I'm scared
22:42I also want to know what will happen next.
22:44These crocodiles may be in a semi-conscious state.
22:47It's also possible for wild instincts to suddenly erupt.
22:48We can't say for sure.
22:49Are you guys ready?
22:50We need to take action.
22:51I'll run away as soon as you catch it.
22:52Are you ready?
22:53Ready
22:56pull
22:56pull
22:57pull
22:58let go
22:58let go
23:00This American alligator did not emerge from a semi-sleep state.
23:04It charged out with all its might.
23:06Prepare the towels
23:07Keep pulling
23:08Exhaust his energy
23:10Exhaust his energy
23:12Exhaust his energy
23:13Exhaust his energy
23:14Cover with a towel
23:17One, two, three jumps
23:20His lock was exposed
23:22OK
23:25That's enough.
23:26Locked here
23:29Could you bring the tools over?
23:30Now begin the measurement.
23:31Sergio
23:32Can you tell his gender?
23:33We learned from the American alligators of La Portcana
23:35The data obtained is very important
23:38American crocodile behavior
23:39Not well known to people
23:40There are not many records.
23:42We want to include the data on the American alligators here.
23:44Comparison with other American crocodiles
23:46For example, those from the Takils River
23:48Or other American crocodiles in stable waters
23:50Chris should treat it like a baby alligator.
23:53Should I mark his writing?
23:54We need to use his blood
23:56Measuring cortisol
23:57Blood cell count
23:58Blood chemistry
23:59Blood lipids before and after the following
24:02and glucose water bottles
24:03He doesn't look very thin.
24:04In pretty good condition
24:07Can we catch a smaller one next time?
24:09I have never seen an American crocodile.
24:10In such dry soil below
24:13About two days before we arrived
24:14The land there was completely dry.
24:17And this American crocodile was living underground.
24:19Good condition
24:20marvelous
24:21American crocodiles are amazing!
24:22It's a great pleasure to be here studying these American crocodiles.
24:25Chris dodged
24:28alright
24:30It will be very dangerous to go any further.
24:32There might be holes dug by American crocodiles in the water.
24:35One wrong step and you might find a bunch of alligators waiting for you.
24:44People are rarely seen here.
24:45An ideal natural environment for American crocodiles
24:49We felt like we were in a minefield.
24:55careful
24:55I'm transferring over there.
25:08I think Rabucana is a great place.
25:15From a scientific perspective
25:16The American alligators here serve as a perfect control group sample.
25:21I deal with large, dangerous animals like crocodiles.
25:24Once the camera lens is gone at the end of the day...
25:26I would feel exhausted.
25:30I enjoyed everything that happened today.
25:32We obtained many blood samples.
25:35These are all very good physiological samples.
25:37marvelous
25:38Tomorrow we need to explore the relationship between humans and American crocodiles.
25:41Another interactive mode
25:43We will study the potential negative impacts of American crocodiles on humans.
25:49so far
25:50We not only collected data
25:51We also learned about the relationship between humans and American crocodiles in rivers.
25:54Interactions between farmland and other densely populated areas
25:57We also saw that it was undisturbed by humans.
25:59American crocodiles in their primitive state
26:00The place we're going to next is exactly the opposite.
26:03There are thousands of people interacting with American alligators there.
26:06That is the Crocodile Bridge located on the Tarkels River.
26:12This bridge is one of the most famous ecotourism destinations in South America.
26:16It's a place I've wanted to visit for many years
26:21In fact, an accident had just occurred there not long ago.
26:23Someone lost their life about a month ago.
26:29I'd heard of the Takils River a long time ago.
26:31Many people who study American crocodiles come here to take a look.
26:37Crocodile Bridge located on the Tarkels River
26:41It is a very special tourist attraction.
26:43The surrounding communities all developed thanks to this bridge.
26:47This place is actually a bit like an amusement park.
26:49If there were no American crocodiles
26:51These shops no longer exist.
26:53It was the American crocodiles that attracted people here.
26:56There are so many American crocodiles here.
26:58Yes, stay calm.
26:59I've heard about this wall countless times.
27:01When I walk on it
27:03Looking at it from the side, it truly lived up to its reputation.
27:06These American crocodiles are truly terrifying.
27:08Just thinking about it makes my back ache.
27:12That American alligator is almost five meters long.
27:15You'll understand then.
27:16Why is this ecotourism spot so famous?
27:20I stood there
27:21The first time I've ever experienced looking down from the Crocodile Bridge.
27:24I'm not sure if it's appropriate to catch alligators there.
27:27I remember looking at Chris and asking
27:29Do you really want to do this?
27:31We're going to catch these American crocodiles today.
27:32Do we really want to catch these crocodiles?
27:34Yes, let's take action now and keep going!
27:39Want to catch American alligators at the Alligator Bridge
27:40There will be many difficulties.
27:42You must go under the bridge to catch it.
27:44But in terms of the density of American crocodiles
27:45This place is not safe.
27:46Very good
27:47There are groups of American crocodiles here.
27:50The clouds are getting thicker and thicker
27:51A storm is coming.
27:52That's right
27:53If it starts to rain
27:54Our first priority is to get off the bridge as quickly as possible.
27:56After we got off, we went up to this small island.
27:59Chris has been rehearsing
28:00companions
28:01I need to go to the area where American alligators gather first.
28:03Try to lure them over
28:04Let's see what happens.
28:05Let's see what they do.
28:07Once I lassoed the alligator's forehead...
28:10Everyone grabbed the rope tightly and pulled hard.
28:11When you pull the rope
28:13Never wrap the rope around your hands or wrists.
28:15If the American alligator gets into a fit and exerts its strength...
28:17It might break your hand.
28:23That's terrifying.
28:24You walk to the water's edge
28:25You can see ten to fifteen American crocodiles.
28:28They are right beside you.
28:32Your goal is clear.
28:33It's about attracting them.
28:35We cannot set foot in that waterway
28:36Otherwise you'll only make things worse for yourself.
28:40An American crocodile weighing nearly 700 kilograms
28:42It can slap a person off the ground and into the water.
28:45If you are standing nearby
28:46His tail could break your legs.
28:49I hope the team members can get serious.
28:52This will make everyone more cautious.
29:14Time turns
29:14Drag it over here
29:15Drag it over here
29:16We need to hurry.
29:17Rolling around
29:18I'll forward this first.
29:19Rolling around
29:20Rolling around
29:21Wait a minute, hold on.
29:24Cover with a towel.
29:27one two three
29:30Explain to your superiors
29:31Hurry up and give me a syringe
29:32Quickly call Marina over.
29:34one two three
29:37You two be on guard.
29:38There are many American crocodiles around.
29:39Number 166
29:44Drive away the syringe
29:45OK
29:45And this too.
29:47OK
29:48We're about to let go.
29:49Push them all up a bit
29:50Everyone
29:51Hurry up!
29:53very good
29:54very good
29:58here you go
29:59Perfect
30:00Thank you so much
30:03The operation went very smoothly.
30:05We caught a
30:06American alligator about 4.5 meters long
30:07Then it started to rain.
30:15We just received the news.
30:16Flooding in the upper reaches of the Tarkers River
30:18Rushing downstream
30:19I want to know how much time is left.
30:20Time is running out
30:21We need to hurry.
30:22The water level of the river did not change significantly at first.
30:24But suddenly
30:25It started to rise rapidly.
30:29Catching an American crocodile is no easy task.
30:30We need to approach them first.
30:32Then quickly put a lasso over their foreheads.
30:35Next, we must get this guy, weighing over 450 kilograms.
30:38Move to a safe place
30:41The American alligator initially rolled around
30:43You just want to pull it quickly.
30:45American crocodile rolls
30:46We must maintain communication
30:48When the American alligator was exhausted
30:50There will be some chaos for a while.
30:52We dragged it to the center of the island.
30:54After it stops scrolling
30:55We put a towel over its head.
30:57Then everyone jumped onto it.
30:59We jumped onto it simultaneously.
31:01It can be controlled without harming it.
31:04Synchronization is key
31:05After the American alligator stopped rolling
31:07We got off it.
31:08Fix its jawbone
31:10Then we began to acquire
31:11Blood samples needed for the research
31:13Skin samples and measurement data
31:15These tasks are all organized and well-organized.
31:19The time it took us to complete these tasks
31:21It won't put too much stress on the American alligator.
31:24We will then put it back into the water on the spot.
31:27To avoid harming the innocent
31:28one two three
31:31Backwards Backwards
31:34After we left
31:35The entire island was almost completely submerged.
31:38We left just in time.
31:40Very good
31:43The second alligator we caught was also very large.
31:45It is more than four meters long
31:46More than 400 kilograms
31:48Although it was raining
31:49But everything went smoothly.
31:53If the crocodile was not disturbed
31:54We can catch four or five more.
31:57Our operation went smoothly.
32:00We and the American alligators are both safe and sound.
32:01I'm so happy I can leave tomorrow.
32:07Ready for the second round?
32:08Are you ready for the second round?
32:08Let's catch some more American crocodiles
32:10How many more crocodiles do you need for your research?
32:13It would be best to catch three or four more.
32:23We were fortunate to receive permission from the Costa Rican government.
32:26You can venture deep into the Tuckers River to catch American alligators.
32:29Over the past two decades
32:31Only a very small number of teams can go there to catch American alligators.
32:35We cannot become complacent because of yesterday's achievements.
32:37Treat it as if it's the first time every time.
32:39So be patient.
32:40Treat it as if you've never caught an alligator before.
32:43These crocodiles have killed and eaten people before.
32:46If you have fish activity nearby
32:48The chances of survival are very slim.
32:50At the Takils River
32:52Peaceful days are the best days
32:53You never want to think about it.
32:55It will leave you with memories of that place.
32:57Because that memory must be something bad.
33:00Pull him over
33:04This American crocodile is very big
33:05Pull him over
33:17As far as I know
33:18In the Western Hemisphere
33:19Besides the Takers River
33:21Large alligator colonies can no longer be found anywhere else.
33:24These wild American crocodiles are highly mobile.
33:26May wander at any time
33:28You won't see groups of American alligators.
33:30Wandering together in the wild
33:31Because this situation simply will not occur.
33:34When I learned that I was going to the Tuckers River to catch American alligators
33:37And when obtaining their data
33:38I am very excited
33:39Everyone wants to go there to see the American alligators.
33:48Despite our plans and preparations
33:51But dealing with an alligator is no easy task.
33:54We can catch American crocodiles
33:55It is also a blessing from heaven.
34:10When I feel confused about everything I've done
34:12Stop and look around
34:14You'll find cameras everywhere.
34:16There was also a drone flying overhead.
34:18I've never had any fans before.
34:20This time we have a spectator area on the bridge.
34:22That's practically on par with Super Maru.
34:37Our purpose here is very clear.
34:38It involves obtaining the sex information of the American alligator.
34:41We've heard that there's a male-to-female ratio in American alligators.
34:43Severely high
34:44We want to see the American alligators that live here.
34:46Does this situation also exist?
34:48Determine his gender.
34:50Male, absolutely male
34:52We need to test these American crocodiles
34:54and their blood samples
34:56The data obtained will help Chris's research.
35:00This American crocodile is huge!
35:03After Chris completed the sample collection
35:05As usual, we released the American alligators.
35:09It's clear that the most dangerous force of these American crocodiles is their mouths.
35:12One mistake could cost you your life.
35:14Loosen the rope, remove the tape, and don't move it.
35:17Those people who jumped onto the American alligator from behind
35:19It will lift the hind legs of the American alligator
35:21Now they have also been released.
35:23The crocodile now knew it had regained its ability to move.
35:26Now it's just Caroline and me on the American alligator.
35:29Grab it! Grab it!
35:32His mouth opened
35:33His mouth was tied with rope.
35:35But it's not very tight.
35:36I tried to lie on top of him
35:38Stay still, thankfully you didn't fall.
35:40Come down quickly! Come down quickly!
35:45The scene was very tense, and there was a possibility of an accident.
35:49In my opinion, unless the alligators are driven away...
35:51Otherwise they will eventually become a threat to humanity.
35:54Humans feed American crocodiles time and time again
35:56They would use humans as a food source
35:57If a person appears by the river, they will be in a very dangerous situation.
36:00Got it! Got it! What came out?
36:02Let's protect some insurance companies.
36:05Protecting retreat
36:10Are you ready?
36:11Yes
36:12one two three
36:14I did all this because I care about American alligators.
36:18When I was a kid, I watched Steve Irving's show.
36:21I fell in love with American crocodiles
36:23Steve inspired me to get to where I am today.
36:26Focus on your goals
36:28Became a scholar
36:30Promoted the conservation of American crocodiles
36:39How can the conflict between humans and alligators be resolved?
36:41This is a difficult problem facing the Costa Rican government.
36:44You must remain neutral
36:46Educate all locals to change certain behaviors
36:48Let people
36:49And between humans and American crocodiles
36:51Able to coexist harmoniously
36:53Well done, we can go now.
36:54We obtained the data we needed.
36:56I've finally said everything!
36:59Many problems here
37:00It also exists in Florida, USA.
37:02Humans are getting closer and closer to these previously uninhabited areas.
37:06With the increasing numbers of humans and crocodiles
37:08The mutual influence is deepening
37:10Incidents involving people will become more and more frequent.
37:12The relevant agencies in Gestaliga need to make a difficult decision.
37:20Time is of the essence
37:21People hope to see results as soon as possible.
37:25If I could contact people at research institutions related to American crocodiles
37:28Let's discuss what measures need to be taken.
37:31What I want to say first is
37:32They need to establish an alligator response team.
37:35In some areas, roaming alligators do indeed need to be driven away.
37:39But I suggest we also exercise some restraint.
37:41People from all over the world come here
37:44You can then view giant American crocodiles in a relatively natural environment.
37:48From an academic perspective
37:50We gained a lot.
37:51We finally entered La Bercana
37:53We caught an American alligator that had just finished its summer cotton harvest.
37:57And we obtained the measurement data we needed.
37:59With the help of Paul and Caroline's team
38:02We also tagged a large number of American crocodiles.
38:05And they were paired with the American alligators captured at the Alligator Bridge.
38:09A comparison was made
38:17We need to continue testing the hypotheses.
38:20Why might there be a higher male ratio in American alligators?
38:23These American crocodile embryos
38:26How does it develop?
38:28When the temperature indicates it's time to release the female alligator baby.
38:31Why are only males emerging?
38:34We proposed another hypothesis based on local conditions.
38:44We learned that there are several fish farms in the area.
38:50They're all using fake chicken buckets.
38:59We don't know if this will have any impact on the alligator population.
39:07But this is clearly possible.
39:09Therefore, by paying attention to various potential factors
39:13By understanding the specific living environment and experiences of this group of American crocodiles
39:20We hope to uncover just the tip of the iceberg of this mystery.
39:27We analyzed factors that may contribute to a higher proportion of male alligators.
39:31They also speculated on why this was the case.
39:33This is because some male alligators prey on those of their dominant species.
39:38Expulsion
39:38We have to move to a place that might escalate conflict with humans.
39:43Simply put
39:44They only approached humans out of necessity.
39:49The situation here is complicated.
39:50No single method can solve all the problems at once.
39:54I hope after we leave
39:56Data obtained from this expedition
39:58It will change how locals treat alligators.
40:01Our goal is to enable humans and alligators to coexist harmoniously here.
40:05We need to ensure that this relationship continues.
40:13We must acknowledge that coexisting with American crocodiles is a stroke of good fortune for humankind.
40:18Gustaliga did a great job in this regard.
40:22I believe they will continue their efforts.
40:25Putting the important matter of harmonious coexistence into practice
40:30We need to let people know about American crocodiles
40:32Knowing they weren't killers
40:34Their target is not humanity.
40:35We should protect American crocodiles and their habitat.
40:38We not only want to help everyone understand how to coexist with alligators
40:42They also need to understand why it's necessary to coexist with American crocodiles.
40:48To be able to come to Gestaliga and make my own contribution
40:51This is a big deal for me
40:53It is a rare experience in one's life.
40:56We provided Chris with a lot of valuable data for his research.
41:00We also captured many large American crocodiles.
41:03It's a pity that all of this is coming to an end.
41:08The American crocodile is one of the most amazing and unique animals on Earth.
41:14We hope that what we have done will help promote harmonious coexistence between humans and American crocodiles.
41:19live
41:20Thank you for watching
41:22Thank you for watching
41:23Please feel free to like, subscribe, tip, share, and tip!
41:24Mingjing and Dots Column
41:26YoYo Television Series Exclusive
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