Seanet High Intertidal

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Haliotis cracherodii Leach, 1814
Phylum Mollusca, Class Gastropoda, Subcl. Orthogastropoda, Superorder Vetigastropoda, Family Haliotidae

Black abalone. Oval shell to >20 cm, dark blue to black, smooth with 5-9 holes flush with surface of shell; tentacles & side of foot black.

Rare (listed as endangered in 2009); high intertidal zone to 6 m depth subtidally; bulk of population in crevices in rocky intertidal.  Grazes on diatoms when small, unattached drift algae when larger.

Geo Range: central Oregon to Cabo San Lucas (Baja)
Similar species: this is the only intertidal abalone, but Haliotis rufescens & H. walallensis occur subtidally in kelp forests (see table)