Arenicola

Arenicola, also known as sandworms, is a genus of capitellid annelid worms comprising the lugworms and black lugs.

A.cristata is the dominant warm-water lugworm on the shores of North America and Humboldt Bay, California. A. caroledna dominates in China and Japan while Arenicola marina is mostly found in Europe, up to Norway. Arenicola loveni is restricted to Southern Africa.