Pelagic fish Atlantic Ocean, the Gulf of Mexico and the Mediterranean Sea. The term highly migratory species (HMS) is a legal term which has its origins in Article 64 of the United Nations Convention on the Law of the Sea (UNCLOS). The highly migratory species include: tuna and tuna-like species (albacore, Atlantic bluefin, bigeye tuna, skipjack, yellowfin, blackfin, little tunny, Pacific bluefin, southern bluefin and bullet), pomfret, marlin, sailfish, swordfish, saury and oceangoing sharks, dolphins and other cetaceans. Essentially, highly migratory species coincide with the larger of the "large pelagic fish", discussed in the previous section, if cetaceans are added and some
HMS Skipjack (1889) a minefield laid by the German submarine "UC-68" in the approaches to the Clyde which was holding up shipping from the Clyde and Liverpool. "Skipjack" was a member of the Second Fleet Sweeping Flotilla, based at Scapa Flow as part of the Grand Fleet, in July 1917. In 1918 she was a member of the 13th Fast Minesweeper Flotilla at Oban . "Skipjack" was sold for scrap to Hammond Land Foundry of Dublin on 23 February 1920. HMS Skipjack (1889) HMS "Skipjack" was a of the British Royal Navy. She was built at Chatham Dockyard from 1888–1891. She was converted