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
USS Skipjack (SS-184) a "down the throat" spread of three torpedoes that sank the "Kanan Maru" (). Two days later, the submarine intercepted a three-ship convoy escorted by a destroyer and she fired two torpedoes that severely damaged the merchant ship, "Taiyu Maru" (). Then she let go with four more that quickly sank the cargo ship, "Bujun Maru" (). On 17 May, "Skipjack" sank the passenger-cargo ship "Tazan Maru" () off Indochina before heading back to Fremantle. Following participation in performance tests for the Mark 14 torpedo, "Skipjack" sailed for her fourth war patrol on 18 July 1942, conducted along the northwest