Crangon

Crangon is a genus of shrimp.

==Distribution== Crangon species are found exclusively in the Northern Hemisphere, with most of the species occurring in the northern Pacific Ocean. C. septemspinosa is the only species in the genus to occur in the north-western Atlantic Ocean, while in the north-eastern Atlantic, C. crangon and C. allmani occur. With the exception of the important commercial species C. crangon, however, the distributions of Crangon species are poorly characterised. The greater number of species in the Pacific Ocean is thought to indicate that the genus originated in the Pacific.