Sphyrna lewini (Griffith & Smith, 1834) .

Scalloped Hammerhead. 4.3 m (14.1 ft) TL (Robertson and Allen 2008). Circumglobal; western Pacific Ocean north to southern Japan (Yoshino and Aonuma in Nakabo 2002); several southern California records as far north as Santa Barbara, southern California (Seigel 1985) and south to Puerto Pizarro, Peru (Chirichigno and Vélez 1998), including Islas Galápagos (Grove and Lavenberg 1997). Marine and brackish waters (Grove and Lavenberg 1997); depth: surface to at least 1,043 m (3,421 ft) (min.: Weigmann 2016; max.: Moore and Gates 2005), Among other authors, Naylor et al. (2012) found evidence that Sphyrna lewini is likely a species complex.