Risso’s dolphin

Grampus griseus

LENGTH Up to 4 m / 12 ft

DORSAL FIN Tall, curved; usually darker grey than body

APPEARANCE Grey; body often appears covered in scratches; head is very rounded without a noticeable rostrum (beak)

BEHAVIOUR Social, usually in groups of 10-50; may porpoise, breach, spyhop

Photos by A. Phillips, DFO, R. Baird and R. Butler. Illustrations by A. Denbigh, not to scale.