Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Jumping fleas can accelerate 50 times faster than the space shuttle.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Alligators can live up to 100 years.
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Sharks, like other fish, have their reproductive organs in their chests.
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