An apparently wide ranging species found from the Western Indian Ocean to the Eastern Pacific. However, this is considered a species-complex and more than five species in total may be involved. Taxonomic investigation will be vital to identify the species involved and their true distributions (W. White pers. obs. 2007). Reported from: American Samoa, Australia, Cambodia, Cook Islands, Guam, China (Hong Kong), Taiwan, Province of China, India, Indonesia, Japan, Ogasawara Islands, Madagascar, Malaysia, Mauritius, Micronesia, Mozambique, Myanmar, Marianas, New Caledonia, Palau, Papa New Guinea, Philippines, Samoa, Somalia, South Africa, Sri Lanka, Tanzania, Thailand, Tonga, Vanuatu, Vietnam and Yemen (Compagno 1986).