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any of several huge clams of the family Tridacnidae, inhabiting the shallow waters of coral reefs in the tropical Indo-Pacific, as
some may weigh more than 500 pounds (225 kg).
First recorded in
Based on the Random House Dictionary, © Random House, Inc. 2017.
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The length of this "
" is from four to seven inches.
The Sea-beach at Ebb-tide
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