00:00Have you seen those who have no heart and mind and are full of nonsense?
00:05I'm sure you've seen what I'm talking about in fantasy movies or science fiction movies.
00:11But I'm not talking about you.
00:13We're going to show you what they are in the story of Amazing No. 2,
00:17Nonsense of Death.
00:20The first animal that is made up of many cells and leveled up is the sponge.
00:30The sponge is the most unique thing that happens in the world at the beginning of life.
00:36An animal that has no organ, no tissue, no nervous system.
00:41But even so, they still level up.
00:44They are the first ones to have cells that have different jobs.
00:49To reproduce, the sponge makes egg cells and sperm cells.
00:54They hide the eggs in the body and the sperm is taken out to be divided into different sponges.
01:01They also have an outer layer of the cell just like the human skin.
01:05A special layer of cells is hidden inside to bind the bacteria from the water.
01:11They are herbivores, experts in small and microscopic foods.
01:17The jellyfish are some of the first multicellular creatures that came into being.
01:23How can a hammond catch water using a body of 95% water?
01:30Their bells are like jellies that are attached to a thin membrane.
01:35There are muscles around the bell that squeeze out water.
01:40This is the first jet propulsion system.
01:44But their biggest invention are microscopic neurotoxic darts.
01:50The king of all is the Nomuras jellyfish.
01:54This could be the biggest jellyfish that has ever lived.
01:57It's so big, as big as a refrigerator.
02:01The Nomuras jellyfish comes from the Yellow Sea between China and Japan.
02:07It likes to go on food trips.
02:09Their size is different from most of them.
02:13It has hundreds of mouths that can be seen around the big arm under its bell.
02:20It's safe for its friends, the small fish.
02:23As long as they can avoid its long and thin tentacles, they will sting.
02:29The Nomura's mouth is only one millimeter wide.
02:33Only small floating animals or zooplankton can fit in here.
02:39But each of them will be stung first.
02:43If you're afraid of these stingy aliens, there's one more bad news.
02:48We don't even realize that we're doing something to increase them.
02:53We're pouring nutrients into the sea that are dripping plankton blooms.
02:59We catch the fish that eat plankton.
03:02That's why there's more food for the Nomura's.
03:06It's like we're giving them a chance to launch an alien invasion.
03:11Why are they so quick to multiply?
03:14Because they can clone themselves.
03:18Their larvae stick upside down to the bottom of the sea.
03:23But they don't just grow up to be an adult.
03:27Each larva makes many identical copies of itself.
03:32In just one generation, they can launch a clone army.
03:36If the conditions are favorable, the jellyfish population will suddenly explode.
03:42If this is scary, well, the truth is that this has happened many times in the history of the world.
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