This is a tropical/subtropical species that inhabits oceanic waters around the globe generally between 40°N and 35°S. It does not generally approach close to shore, except in some areas where deep, clear waters are very close to the coast (such as around oceanic archipelagos like Hawaii). Reports of its occurrence in the Mediterranean Sea, while common in the literature, are not supported by authenticated records. It is also doubtful whether it occurs regularly in the Red Sea or Persian Gulf (Leatherwood et al. 1991). A few high-latitude strandings and sightings are thought to be extralimital records, and are generally associated with incursions of warm water (Ross and Leatherwood 1994; Donohue and Perryman 2002; Williams et al. 2002).