Olympia oyster is a species of oyster that occurs on the Pacific coast of North America. They are approximately 6 to 8 centimeters (2.4 to 3.1 in) in length.
Olympia oysters’ reproductive process is very interesting. During the reproductive period, the majority of Olympia oysters begin the season as males, later become females, and still later on many revert to the male phase again. Females retain their eggs for about two weeks after fertilization and then release them after the tiny larvae have developed a protective shell.
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