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 (SSN-585) an extended deployment in October and November, the submarine returned to Norfolk to prepare for major operations of that year which she completed on 25 February 1968. The remainder of 1968 was spent in local operations in the Norfolk area. On 9 April 1969, "Skipjack" commenced an overhaul in the Norfolk Naval Shipyard which was completed in the fall of 1970. After sea trials in December 1970, "Skipjack" returned to her regular duties. Highlights of 1971 were sound trials and weapons system tests at the Atlantic Fleet Range, Puerto Rico, from 25 January through 5 March and NATO exercise "Royal