Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Jellyfish as a species are actually older than dinosaurs and sharks.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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Sharks, like other fish, have their reproductive organs in their chests.
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A scorpion can hold its breath for up to 6 days.
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