Wood-eating clams use their feces to dominate their habitat

Researchers didn’t know what to make of sunken pieces of wood that were so thoroughly chewed-up by clams that the wood crumbled in their hands. It turns out, the super-chewer wood-eating clams had a secret weapon for forcing out other species. The clams, who have special adaptations that let them survive in dirty, low-oxygen water, built chimneys out of their own feces, making the wood a ‘crappy’ home for any animal except them.

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