Cuttlefish mimics hermit crab

Why Evolution Is True

I talk a lot about mimicry on this site, and I’ve explained why: it’s good evidence for natural selection, poses testable hypotheses, and, not least, provides some amazing examples of the power of natural selection—especially because in many cases of mimicry we can identify the “target of selection”: the optimum phenotype that provides the greatest fitness. And these cases often show that the target is pretty well hit: see many examples here.

Here’s a pretty amazing one I didn’t know about, but was spotted by Matthew Cobb on Twi**er. It’s a cuttlefish that mimics a hermit crab. Or at least that’s what it seems to be doing.

Here’s a longer video from National Geographic, clearly showing that the cuttlefish mimics the crab’s shell, its antennae, and its…

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