Saddle Oyster (Anomia ephippium)

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Saddle Oyster

Compared to other oysters, the shell of the Saddle Oyster is thinner and more brittle. It's roughly circular and up to 1½ inches wide. The upper valve has 3 muscle scars and the lower has a hole by which the animal attaches itself to rocks or other shells. The inside is shiny, sometimes metallic-looking.