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) Night" from 15 September to 9 October. On 22 October, "Skipjack" returned to Norfolk, where she remained through January 1972. "Skipjack" spent most of 1972 in tests and type training out of Groton, CT and Norfolk, VA as well as the Caribbean. The submarine returned to Norfolk in late 1972. Toward the end of spring in 1973, "Skipjack" returned to the Mediterranean Sea and conducted several exercises with the Sixth Fleet. During that time "Skipjack" was home ported at La Maddalena on the NE corner of Sardinia. Returning to Norfolk in September "Skipjack" crossed paths with Hurricane Ellen during the