When it comes to weird, the cuttlefish has it mastered. It has green-blue blood, three hearts, can change its skin colour and when threatened squirts a cloud of ink to hide itself. If that fails, it squirts ink mixed with mucous to create a smaller, denser cloud similar in size and shape to its own body. This is used as a decoy while the real cuttlefish escapes.
Cuttlefish
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