Nesting takes place in colonies on both sides of the north Atlantic, the largest of which are at Bass Rock (75,000 pairs as of 2014), St Kilda (60,000 pairs as of 2013) and Ailsa Craig (33,000 pairs as of 2014) in Scotland, Grassholm in Wales, and Bonaventure Island (60,000 pairs in 2009) off the coast of Quebec. Its breeding range has extended northward and eastward, with colonies established on Russia's Kola Peninsula in 1995 and Bear Island, southernmost island of Svalbard, in 2011. Colonies are mostly located on offshore islands with cliffs, from which the birds can more easily launch into the air. The northern gannet undertakes seasonal migrations and hunts for the fish that form the bulk of its diet by high speed dives into the sea.