Fin whale

Balaenoptera physalus

LENGTH 18–22 m / 59–72 ft

DORSAL FIN Sickle-shaped; relatively large; very far back on body

APPEARANCE Right lower lip is white, while left is dark; Blowhole and dorsal fin not visible simultaneously when surfacing

BEHAVIOUR Tall, narrow blow; rarely lifts tail flukes when diving

Photos by A. Phillips, C. McMillan, J. Towers, J. Ford. Illustrations by A. Denbigh, not to scale.