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One big difference between oysters and clams is that the oyster spends all of its life except its first few weeks attached to one spot. The clam moves itself around throughout its life by means of a foot, a hatchet-shaped muscle which protrudes from the shell. The clam pushes its foot out, hooks it in the sand, and pulls itself along. Oysters have a foot like this when they are very young, but it disappears when the oyster finds a place to settle. (Big Site of Amazing Facts). For the source and more detailed information concerning your request, click on the related links section (Answers.com) indicated at the bottom of this answer box.

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16y ago

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