Marine Molluscs from Shallow-Water Environments (0 to 60 Meters) off the Northeast Yucatan Coast, Mexico

A benthic survey on the western side of the Yucatan Strait yielded 316 species of shallow-marine molluscs. There are five major molluscan assemblages which represent the following environments: the rocky intertidal zone (e.g., Nerita peloronta, N. tessellata, Littorina ziczac), lagoons and mangrove swamps (e.g., Bulla striata, Cerithium eburneum, Macoma brevifrons), the coral reef-backreef area (e.g., Olivella floralia, Codakia orbiculata, Tellina similis), a strait washed by swift currents (e.g., Ervilia nitens, Lucina multilineata), and the open sea (e.g., Anomia simplex, Chione pygmaea, Trachycardium muricatum).