Gammaridean Amphipoda of the rocky intertidal of California: Monterey Bay to La Jolla

The Californian rocky intertidal, with its rich flora and its exposure to seas of normal salinity, supports a diverse and numerically abundant amphipodan fauna. Gammaridean Amphipoda are the most abundant of the macroscopic Crustacea in this zone; their density exceeds that the larger Decapoda and those companion orders of a similar body size such as Isopoda, Cumacea, and perhaps Tanaidacea.