00:00 Hey everyone and welcome back to Pet Spot.
00:02 In this video we're going to be talking about 12 animals that make swimming extremely
00:07 dangerous.
00:08 So stick around until number 1 so you don't miss out on any of them.
00:12 Number 12, Crocodiles.
00:14 There is no doubt that crocodiles are one of the most dangerous and vicious predators
00:18 on earth, so naturally we had to include them on this list of animals that make swimming
00:23 very dangerous.
00:24 However, one reassuring fact is that crocodiles can't open their mouths underwater, therefore
00:29 can't exactly attack underwater.
00:31 They have a palatal valve at the back of their mouth, which closes when underwater.
00:35 But don't think for one second that this reduces their potential to cause harm.
00:39 They just need to be in shallow water or on land to swallow food without taking in water.
00:45 Once they grab their victim, crocodiles will clamp down on their prey with their massive
00:49 jaws, crush it and then swallow the prey whole.
00:52 Number 11, Lionfish.
00:54 A lionfish sting involving multiple spines can cause infection and body-wide symptoms.
01:01 Changes in heart rate, abdominal pain, sweating and fainting can be observed.
01:05 Deaths from lionfish stings are rare.
01:08 Symptoms can last anywhere from 8 hours to 30 days, depending on the severity of the
01:13 sting.
01:14 However, there is no evidence to support the assertion that lionfish are aggressive towards
01:18 divers or human beings whatsoever.
01:21 Although there has been a great deal of video taken from lionfish fighting with one another.
01:26 However, they do not attack or go on offensive with their spines.
01:30 Still, seeing as how vicious their stings are, it's best to avoid them at all costs.
01:35 Number 10, Piranha.
01:37 Piranhas are easily one of the most dangerous species of predators known to mankind.
01:42 Deceivingly small, these fish are one of the most aggressive species in water, and many
01:47 times their attacks are directed towards humans, usually biting at the toes and feet.
01:53 They are fast eaters too, with a huge appetite.
01:56 They've been seen to finish devouring a fish in less than 30 seconds, leaving behind nothing
02:01 but the bones.
02:03 Adding to what makes them so deadly is the fact that they can detect even the smallest
02:06 amount of blood in as much as 200 litres of water.
02:10 This means if someone gets hurt in the water for entirely different reasons and then starts
02:14 bleeding, chances are that they might be attacked by a large number of piranhas in no time at
02:19 all.
02:20 Number 9, Stingrays.
02:22 Stingrays are one of the deadliest animals that we're going to talk about in this video.
02:26 When a stingray attacks, it needs to be facing its victim.
02:30 This allows it to flip its long tail upward over its body to strike whatever is in front
02:34 of it.
02:35 The ray doesn't have direct control over the sting mechanism, only over the tail.
02:40 In most cases, when the sting enters a person's body, the pressure causes the protective
02:44 sheath to tear.
02:46 When the sheath tears, the sharp, serrated edges of the spine sink in and venom flows
02:50 into the wound.
02:52 Related to another dangerous water predator, the shark, stingrays are, however, quite pretty
02:57 to look at in their valiant colours.
03:00 Their flat, boneless bodies make them hard to spot for unsuspecting swimmers.
03:04 Number 8, Sharks.
03:12 What makes this animal so dangerous is the fact that most people don't realize a shark
03:16 is nearby before it attacks.
03:19 Some people receive only a bump from the shark, which likely occurs when the shark is only
03:23 investigating what's going on at the water's surface.
03:27 Statistically, sharks have been known to attack and eat very few people compared to other
03:31 predators.
03:32 But don't let this fact fool you into thinking that it is in any way easy for people to swim
03:37 or surf in waters infested by sharks.
03:40 Deep-sea surfers are generally at greater risk of being attacked by a shark, because
03:45 the surfboard often resembles prey.
03:48 And once the great shark strikes, there's very little chance of rescue.
03:52 Number 7, Electric Eels.
03:55 Electric eels are deadly predators, as slim bodies have around 6,000 cells that produce
04:00 about 0.15 volts of electricity.
04:03 Although there are a few documented instances of people dying from an electric eel's shock,
04:07 it could happen.
04:08 A single jolt could incapacitate a human long enough where they could drown, even in shallow
04:14 water.
04:15 Multiple shocks could cause a person to stop breathing or even go into heart failure.
04:19 And it goes without saying, if you're in the water and get electrocuted by something, it's
04:23 a pretty dangerous combination.
04:25 Even when they don't feel threatened, they emit a constant electrical charge of about
04:29 10 volts, which acts as a radar to help them find their way in muddy waters.
04:35 Number 6, Sea Snakes.
04:37 If you know animals, then you know that countless members of the snake species are deadly.
04:42 So it is really not surprising that the sea snake finds its way onto our list of animals
04:46 that make swimming extremely dangerous.
04:49 Sea snakes usually aren't aggressive unless provoked or cornered, although they are highly
04:53 venomous.
04:54 Only some snakebites result in significant symptoms.
04:58 However, this can still be fatal.
04:59 The venom is injected by fangs, and the resulting venom is a very potent and toxic mixture.
05:06 As sea snake venom contains neurotoxins, the typical symptoms of sea snake bites begin
05:11 within three hours and include pain in the affected muscles, paralysis, and joint aches.
05:17 Bites typically occur when fishermen are removing the snakes from fishing nets or if the snake
05:21 is stepped on while wading in the water.
05:32 Number 5, Lamprey.
05:34 The sea lamprey is an ancient Atlantic fish.
05:37 These water-bound organisms mostly represent a fish, but are distinguished by their blood-sucking
05:42 ability.
05:43 As soon as they detect even the slightest presence of blood nearby, they get ready to
05:47 strike with their teeth-filled mouths.
05:49 In fact, this unique feature of the lamprey is probably what makes them so vicious.
05:54 Its disc-shaped, suction-cup mouth, ringed with sharp, horny teeth, are used to latch
05:59 onto an unfortunate fish or any other prey.
06:02 The lamprey then uses its rough tongue to rasp away the fish's flesh, so it can feed
06:07 on the host's blood and body fluids.
06:10 One lamprey kills about 40 pounds of fish every year.
06:13 They don't attack humans generally, but might just do so if provoked or starved.
06:17 Number 4, Octopus.
06:19 In most octopuses, their venom contains neurotoxins that cause paralysis.
06:23 Saliva, in a giant Pacific octopus, contains the protein which paralyzes or kills a prey.
06:31 These bites can cause bleeding and swelling in people, but only the venom of the blue-ringed
06:35 octopus is known to be deadly to humans.
06:39 Blue-ringed octopuses deliver painless bites of paralyzing, deadly venom.
06:43 The striking creature is also so good at what it does, and they're counted among the deadliest
06:48 animals of the ocean.
06:49 The attacking potential of octopuses does not stop here.
06:53 Generally unaggressive creatures, though, don't attack unprompted.
06:56 However, when the need arises for them to defend themselves, octopuses will shoot a
07:00 dark liquid, sometimes called an ink, at the thing that scared them.
07:04 This will temporarily blind and confuse a potential attacker, giving the octopus time
07:08 to swim away.
07:10 Number 3, Squid.
07:12 Squids can be dangerous because of their sheer numbers.
07:15 They often travel in groups, and the numbers of aggressive squids appear to be growing
07:19 near inhabited beaches, making them even more dangerous for swimmers and divers, especially
07:24 at night when squids move up towards the surface.
07:28 Squid are generally aggressive hunters, but some species are worse than others.
07:32 Some scientists stipulate that a Humboldt squid only reacts aggressively or dangerously
07:36 to a person's scuba diving gear, with a strong light reflecting, or if a boat has an intense
07:43 flashing light.
07:44 There have been documented cases of active Humboldt squid aggressiveness towards human
07:49 beings.
07:50 They generally prefer to lurk in darker, deeper waters, as do human scuba divers on marine
07:56 expeditions.
07:57 Therefore, this clash of unfamiliar living specimens provokes the former to behave more
08:01 aggressively.
08:02 Number 2, Jellyfish.
08:04 Of all the animals mentioned in this video, this is probably the most relatable and frequent.
08:10 Jellyfish stings are relatively common problems for people swimming, wading, or diving in
08:14 seawaters.
08:15 The long tentacles trailing from the jellyfish body can inject the victim's body with venom
08:20 from thousands of microscopic barbed stingers.
08:24 Jellyfish stings vary greatly in severity.
08:26 Most often, the result is immediate pain and red, irritated marks on the skin.
08:31 Some jellyfish stings may cause more whole-body systemic illness.
08:35 And in rare cases, jellyfish stings are life-threatening.
08:39 The box jellyfish, as a matter of fact, is capable of killing humans with its venom.
08:43 A fully grown box jellyfish can kill up to 50 people with one sting.
08:48 Probably best to avoid them at all costs.
08:51 Number 1, Stonefish.
08:53 Having the most brilliant camouflaging capabilities known, the stonefish is the most venomous
08:57 fish in the world.
08:59 It looks just like a stone, and it's a common mistake to step on it.
09:03 But beware, because this might well be the very last you take.
09:07 The stonefish has 13 stout spines in the dorsal fin, which can inject a highly toxic venom.
09:13 If you inadvertently step on a stonefish thinking it's a harmless rock, it's going to pop
09:17 up its dorsal spines and release a venom from two sacs on the base of each spine.
09:22 Unsurprisingly, the more venom that gets injected, the worse it is for you.
09:26 Stings result in terrible pain, swelling, necrosis, tissue death, and even death itself.
09:32 The venom causes intense pain and is believed to have killed many Pacific and Indian Ocean
09:37 Islanders.
09:38 While you're still here, go ahead and click on one of these two videos on your screen.
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