Which marine creature has three hearts and blue, copper-based blood?
Some sea creatures are biologically stranger than any sci-fi villain Doctor Who has ever thrown at us.
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Be honest: do you look in other people's trolleys at the supermarket and judge them?
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When someone in a horror film heads down to the dark basement alone, do you shout at the telly?
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Be honest: do you wash your hands every single time you use the loo at home?
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