Savannah: How would you like living in your own poop? Well, for these clams, poop-filled driftwood is home-sweet-home.

See, most other clams reach out an appendage called a "siphon" to shoot waste outside their wooden home. But Xylophaga dorsalis clams' waste siphons are really short, so they just poop all over the holes they bore through the wood. And weirdly, this is a super smart move for these guys.

For one thing, predators will avoid a house full of feces. See, that poop water is hard to breathe in, unless you have hemoglobin in your blood like Xylophaga dorsalis do. And researchers suggest that the clams' larvae are attracted to their pungent homes, which would keep them safe, too.

Since those pesky predators wouldn't be able to bother them, they grow and survive in huge number, munching through the wood until it crumbles.

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