Isistius brasiliensis (Quoy & Gaimard, 1824).

Cookiecutter Shark. To at least 56 cm (22 in) TL (Weigmann 2016). Circumglobal; western Pacific Ocean north to Hokkaido, Japan (Ebert et al. 2013); documented as far north as San Nicolas Island, southern California, and probably at least as far north as Año Nuevo, central California (Ebert et al. 2015) to Peru (13°46’S) (Chirichigno and Vélez 1998), and Islas Galápagos (Grove and Lavenberg 1997). Depth: surface to 3,700 m (12,136 ft) (min.: Compagno 2002; max.: Retzger 1990).