Wood-eating clams use their feces to dominate their habitat
“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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If billionaires were clams…
https://www.sciencedaily.com/releases/2022/12/221215191626.htm