Corophium arenarium is a small (up to 7 mm (0.28 in)) European amphipod crustacean of the family Corophiidae.

It looks very similar to C. volutator.

It burrows in bottom sediments, between 10 and 60 m (33 and 197 ft) deep.

Corophium arenarium originates from the coasts of France and the North Sea.

This amphipod article is a stub.