Continent: Africa Oceania Near-East Middle-America Asia Caribbean South-America Europe Australia North-America
Distribution: Atlantic, Pacific, and Indian oceans, chiefly in the tropics. Europe: Adriatic Sea (Croatia ?), Italy (occasional occurence [E. RAZZETTI, pers. comm.]) Turkey [Basoglu 1973], France, Portugal Indian Ocean: Madagascar, Comoro Islands (Grande Comore, Mohélim Anjouan, Mayotte), Chagos Archipelago Pacific: as far north as Alaska and in the Atlantic Ocean: as far north as Great Britain, Gambia Australia (New South Wales?, North Territory, Queensland, West Australia), Nauru? Americas: Canada (British Columbia), USA SE Mexico (Yucatan, Baja California), Belize, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, Panama, Colombia [Castro,F. (pers. comm.)], Argentina Asia: Korea, Andaman Islands, Nicobar Islands mydas: Atlantic Ocean agassizi: eastern Pacific Ocean, Galapagos Islands. Hawaii (USA) and Papua New Guinea;
Type locality: "l'en bouchure du Nagualated, dans le Pacifique (Guatémala)" [Embayment of Río Nagualate, Guatemala]. japonica: Indian and Western Pacific Ocean acording to the 1994 IUCN Red List of Threatened Animals: EC/NE/NW/SE/SW/WC Atlantic, Indian Ocean eastern, Indian Ocean western, Mediterranean and Black Sea, EC/NW/SW/WC Pacific, American Samoa, Angola, Anguilla, Antigua and Barbuda, Australia, Bahamas, Bangladesh, Belize, Benin, Brazil, British Indian Ocean Territory, Cambodia, Cameroon, Cape Verde, Chile, China, Colombia, Comoros, Congo, Cook Islands, Costa Rica, Cote d'Ivoire, Cuba, Cyprus, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Federated States of Micronesia, Fiji, French Guiana, French Polynesia, Gabon, Ghana, Grenada, Guadeloupe, Guam, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, India, Indonesia, Iran, Israel, Jamaica, Japan, Kenya, Kiribati, Kuwait, Liberia, Madagascar, Malaysia, Maldives, Marshall Islands, Martinique, Mauritania, Mauritius, Mayotte, Mexico, Montserrat, Mozambique, Myanmar (= Burma), Netherlands Antilles, New Caledonia, Nicaragua, Nigeria, Niue, Northern Marianas, Oman, Pakistan, Palau, Panama, Papua New Guinea, Peru, Philippines, Puerto Rico, Qatar, Reunion, Sao Tome & Principe, Saudi Arabia, Senegal, Seychelles, Sierra Leone, Solomon Islands, Somalia, Sri Lanka, St Helena, St Kitts and Nevis, St Lucia, St Vincent, Sudan, Suriname, Taiwan, Tanzania, Thailand, Togo, Tokelau, Tonga, Trinidad and Tobago, Turkey, Turks and Caicos Islands, Tuvalu, US Minor Pacific Islands, USA (Washington; Western Atlantic: Maine, New Hampshire, Massachusetts, Connecticut, New Jersey, Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, Florida), United Arab Emirates, Vanuatu, Venezuela, Viet Nam, Virgin Islands (British), Virgin Islands (US), Western Sahara, Western Samoa, Yemen, Zaire
Type locality: “insulas Pelagi: insularum Adscensionis" [The Pelagie Islands and Ascencion Island]; restricted to Ascension Is., see Mertens, R. & Müller, L. (1928)