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The hole truth about animals that bore

July 10, 2015

Research & Collections

Summer is here, it’s hot, the kids are out of school, and by now I expect they’re pretty bored. Perhaps it’s time to go outside and see how bored other things are. For instance, if you’re at the beach, you might find a clam shell with a perfectly circular hole in it. That’s a bored clam shell. Or maybe you’re lucky enough to find a rock or coral with some broad holes in it. Or maybe you notice holes in trees or logs. These are all bored, too.

But what causes all these objects to be so bored? In the case of the shell at the beach, the answer is predatory snails. Some snails – particularly moon snails – soften a clam’s shell by using a boring organ that produces hydrochloric acid, enzymes and other substances. Then the snail rasps the softened clam shell with a hard plate called a…

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