Are you a SpongeBob fan? In the cartoon, the jellyfish can produce delicious jelly. So are jellyfish made of jelly? Of course not. In fact, jellyfish can’t really produce jelly. Jellyfish are a kind of simple sea life. They have lived in the oceans for at least 500 million years. Some jellyfish live in deep and cold sea. Some others prefer shallow and warm waters.
Jellyfish have soft and colorful bodies. Their bodies are made of more than 90 percent water. Jellyfish also have several tentacles(触须). They look interesting. However, you should not touch them because they are very dangerous. Jellyfish can sting(刺) with their tentacles. They use them to hunt small fish. Jellyfish usually don’t hurt humans. Most jellyfish stings happen when someone touches their small jellyfish. Even a dead jellyfish can sting! In the cartoon, SpongeBob can have tasty jelly by squeezing a jellyfish. But in real life, you should never touch a jellyfish!
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