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
Murray cod of this fact, are of great concern. Murray cod were originally the most common large native fish in the Murray-Darling basin. Contrary to some fishery department literature, the first serious declines in Murray cod were caused by extremely severe overfishing. In the latter half of the 1800s and the early 1900s, Murray cod — very large, very long-lived fish — were caught in unimaginable numbers by both commercial and recreational fishermen. For example, one commercial fishing operation commenced on the Murray River near Echuca in 1855, targeting Murray cod over hundreds of kilometres of river, and yet within eight years,