Circumglobal: In tropical to subtropical waters; except the eastern Pacific (Ref. 33390). Eastern Atlantic: Portugal to South Africa, including the Mediterranean and Black Sea, Madeira, and the Canary Islands. Western Atlantic: Canada and Bermuda to Argentina (Ref. 7251). Indian Ocean: along the coast of East Africa, Madagascar, southern Oman, southwest India, the Malay Peninsula, and Western Australia (Ref. 11441). Southwest Pacific: Australia except the Northern Territory, and New Zealand (Ref. 11441). Absent from eastern Pacific and northwest Pacific. Barely entering the Western Central Pacific region. Records from the Northern Territory, Australia and from Indonesia appear to be erroneous (Ref. 9860). Occurrence in Taiwan (Ref. 5193) and Hawaii (Ref. 4517) need verification.