Maritime history of the United Kingdom and echo sounders making life easier now. Fishing in waters off Iceland became important, which led to three "Cod Wars" from the 1950s to the 1970s. British boats were excluded from Icelandic waters in 1976. In 1977 a fishing limit was set up by the European Economic Community, and British waters were opened to other Community members. This led to overfishing. Landings decreased 28% between 1967 and 1997, with fishing now mainly off Scotland. Other sorts of fishing also take place on a commercial basis such as for crab, lobster, shellfish and mackerel. Sport fishing is popular from coasts and
Cod fishing in Newfoundland had decreased by at least 75% in all stocks, by 90% in three of the six stocks, and by 99% in the case of 'northern' cod, previously the largest cod fishery in the world. After a 10-year moratorium on fishing begun in 1992, the cod had still not returned. It was thought that the local ecosystem might have changed, one possibility being that greater numbers of capelin, which used to provide food for the cod, might be eating the juvenile cod. The waters appeared to be dominated by crab and shrimp rather than fish. However, by 2011 it became apparent