Thunnus orientalis (Temminck & Schlegel, 1844) .

Pacific Bluefin Tuna. To 271 cm (8.9 ft) FL (Foreman and Ishizuka 1990). Western Pacific Ocean north to Japan (Nakabo in Nakabo 2002), southern Kuril Islands (Savinykh 1998), and southern Sea of Okhotsk; Shelikof Strait, Gulf of Alaska (Mecklenburg et al. 2002) to just inside southwest corner of Gulf of California (Robertson and Allen 2015). Oceanic epipelagic; depth: surface to 1,426 m (4,677 ft) (Kurt Schaefer, pers. comm. to M.L.). Previously considered a subspecies of Thunnus thynnus (Linnaeus, 1758), raised to full species status by Collette (1999). The size of more than 3 m (10 ft) FL and weight of about 680 kg given by Mecklenburg et al. (2002), after Collette and Nauen (1983), pertains to the Atlantic species, T. thynnus .