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).
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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The reindeer is the only mammal that can see UV light.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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The largest earthworm on record was found in South Africa and measured 22 feet.
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Ants have tiny magnetic compasses in their antennae which help them navigate.
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