With wind and waves samples of underwater sea fauna and flora become visible on beaches. Examples from the North Norwegian coast. Beside the bivalve Icelandic cyprine, Arctica islandica, remains of cold water coral reefs are found here. Lophelia pertusa is a species of cold-water coral which grows in the deep waters throughout the North Atlantic ocean. L. pertusa reefs are home to a diverse community, however the species is extremely slow growing and may be harmed by destructive fishing practices, or oil exploration and extraction. Norway in recent years has protected a number of Lophelia reefs from ground trawling.