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) record, which is a record that still stands. The year 1963 was occupied in submarine attack operations and ASW exercises, all designed to test the capabilities of the nuclear-powered attack submarine. The highlight of 1964 was two months of duty with NATO forces, participating in exercises "Masterstroke" and "Teamwork" and visiting Le Havre, France, and the Isle of Portland, England, before returning to New London in October. After devoting most of 1965 to training exercises, the submarine ended the year by entering the Charleston Naval Shipyard in South Carolina for an overhaul that lasted until 18 October 1966. "Skipjack" then