Benthic; depth range 0 - 6 m (Ref. 865)
Climate / Range
Subtropical; 44°N - 28°N, 125°W - 113°W
Eastern Pacific: USA to Mexico. Historically occurred from Crescent City, California to southern Baja California, Mexico; however, current constricted range occurs from Point Arena, California to Bahia Tortugas, Mexico.
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Shell is dark blue-black and smooth. It is usually free from seaweed and other marine growth. The holes near the shell edge are used to carry of waste and release eggs and sperm (Ref. 312).
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Estimation of some characteristics with mathematical models