Oceanic and coastal waters close to steep gradients such as underwater canyons
Status:
Unknown
Population:
Unknown
Diet:
Mid-water or deepwater squid, fish and crustaceans
Length:
5.5-7m
Weight
2.2-3.3 tons
Identification
Flukes:
Broad with no or small notch in the middle. Trailing edges are slightly concave
Dorsal fin:
Set well behind the center of the body. Trailing edge in usually indented, but occasionally straight, and the tip is slightly rounded
Flippers:
Small, with convex trailing edges and rounded tips
Shape of head:
Short, slightly upturned beak. Mostly cream coloured in front of the eyes, and behind the head in old males. Two teeth usually visible at the tip of the lower jaw in adult males
Body:
Colour varies from rusty brown to dark grey, underside often slightly darker. Adults may appear mottled because of circular or oval scars from cookie-cutter sharks or lampreys
Blow:
Low, bushy and indistinct
Group size:
Typically in groups of 2-7, occasionally up to 25. Older males tend to be more solitary
Behaviour:
Sometimes curious. Dives typically last between 20 and 40 minutes, usually arches back steeply when diving. Occasionally projects head at a shallow angle above the water or breaches near vertical