Sinocorophium
Sinocorophium is a genus of amphipod crustaceans. Description. "Sinocorophium" individuals are generally found in the intertidal zone, burrowing in mud in marine to brackish waters. As of 2012, "Sinocorophium" consists of 10 species with most of them being reported to live in the Far East including China, Japan, Korea and Vietnam, in endemic to temperate and sub-tropical shallows. "Sinocorophium alienese" is the only exception, as according to reports, the species occurs in the delta of San Francisco Bay and areas of the northeast Pacific Ocean. "Sinocorophium alienese" came to the northeast Pacific region through widespread ballast water traffic  during Vietnam War. Morphologically, the genus "Sinocorophium", is characterized by having a rounded posterior and ventral corner of the third , a body part which connects basal joint to each appendage. The characterization include, the separated urosomites, an abdominal segment in Crustaceans and laterally inserted first posterior appendage . Species. "Sinocorophium" contains 10 species: