Donax variabilis, known by the common name coquina, is a species of small edible saltwater clam, a marine bivalve mollusc in the family Donacidae, the bean clams. It is a warm water species which occurs in shallow water on sandy beaches on the east coast of the United States and is also plentiful in Mayaro, Trinidad as well as the Caribbean coast of Venezuela. Known as chip-chip in Trinidad and chipi-chipi in Venezuela.

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