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) and in clearing this minefield. On 18 November 1914 "Skipjack" and the gunboat were about to start a minesweeping run in the channel between Fair Island and North Ronaldsay when "Skipjack" commanding officer sighted the conning tower of the German submarine "U-22". The two gunboats set off at full speed in pursuit, but the submarine outpaced them and dived to safety after a chase of 45 minutes. On the evening of 24 November 1914, the German submarine "U-16" was off the east coast of the Orkneys when she was spotted by a group of trawlers that were minesweeping. The trawlers