Adult females
and the young are medium grey which fades through lighter
grey to white on the flanks and undersides. Males are
dark grey to black, save for a white region from the
rostrum's tip and lower jaw to the back of the teeth,
and another around the blowhole. Two prominant teeth
erupt from the rear of their lower jaw, but remain concealed
in females. The skin may have many scratches from other
males' teeth. Both the longest male and the longest
female specimens measured 5.32m.
