Very little
is known about Sowerby's beaked whales. What we do know
is from those that have stranded because they are rarely
sighted at sea. Unlike many of the other beaked whales,
the teeth that erupt are found midway between the tip
of the beak and corner of the mouth.
They are dark bluish-grey in colour with a prominent
bulge in front of the blowhole with a sandy coloration
on head and beak. The underside is lighter, especially
in the younger animals, with grey or white spots. Their
flippers are long for the Mesoplodon family and the
beak looks like a dolphin's. Their dorsal fin is small
and curved with a rounded tip. Their flukes are dark
on both sides and there is no middle notch.
