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) until again undergoing overhaul at Mare Island in July and August 1941. "Skipjack" returned on 16 August and commenced patrols off Midway Island, Wake Island, and the Gilbert Islands and Marshall Islands. In October 1941, SubDiv 15 (then commanded by "Sunshine" Murray) was transferred to ComSubAsiatic Fleet, along with the tender "Holland", and Joe Connolly's SubDiv 16, as SubRon 2. When the Japanese attacked Pearl Harbor on 7 December, "Skipjack" was in the Philippines undergoing repairs at the Cavite Navy Yard. On 9 December, "Skipjack" (under the command of Charles L. Freeman) departed Manila on her first war patrol, with