Prionace glauca (Linnaeus, 1758) .

Blue Shark. To 383 cm (12.6 ft) TL; reported but not confirmed to 4.8–6.5 m (15.7–21.3 ft) TL (Compagno 1984). Circumglobal in temperate and tropical waters; western Pacific Ocean north to southern Kuril Islands (Savinykh 1998); Kodiak Island, western Gulf of Alaska (Karinen et al. 1985) to Chile (Miller and Lea 1972), including Gulf of California (Compagno et al. in Fischer et al. 1995), and Islas Galápagos (Grove and Lavenberg 1997). Oceanic pelagic; depth: surface to about 1,000 m (3,280 ft) (min.: Eschmeyer and Herald 1983; max.: Weigmann 2016). This species may more properly be placed in the genus Carcharhinus (Naylor et al. 2012) .