Many types of clam escape predators by burrowing into the sea bed using alternating movements of their shell and of the soft, muscular foot contained within that shell.

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There are reports that they doctored bottles of soft drinks so the top half contained ordinary, non-lethal substance and the bottom half, the liquid explosives.

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But months later, after the letter arrived and I traced its arc and came to land with a soft thud in an enchanted forest, and after I had listened to all the stories contained in this book and written them down for you, that one story came back to me.

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