Body fusiform, stout; tail as long or longer than rest of body; head broad; snout broad; eyes on midside of head; pectoral fins with narrowly rounded tips. Metallic blue-grey above, underside white, with white area extending above pectoral-fin bases. To 5.7 m.
This species uses its enormous tail to herd schooling fishes towards the surface, where they are stunned by thrashing the tail. Females give birth to live young.
Coastal regions to the open ocean, in surface depths to 650 m.
Circumglobal. In southern Australia.
Although not usually considered dangerous to humans, has the potential to bite, or inflict damage with tail.
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Vulnerable