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These clams don't have to go far to take a bathroom break - and they're extremely suited to living in houses made from their own feces!

Hosted by: Savannah Geary (they/them)
Krystian Aparta: Writer
Kyle Nackers: Fact Checker
Amy Peterson: Script Editor
Faith Evelyn Schmidt: Videographer
Stefan Chin: Script Supervisor
Stefan Chin: Editor
Aimee Roberts: Art Director
Daniel Comiskey: Editorial Director
Savannah Geary: Producer
Nicole Sweeney: Executive Producer
Hank Green: Executive Producer


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.