However,
whales of large body size likely arose multiple times in the evolution of sperm whales, and the majority of these large whales also had unusually large upper and lower teeth.
Not exact matches
The two oldest and distinct groups
of squid eaters, sperm
whales and beaked
whales, grew
large body sizes because
of the physiological demands for diving to the great depths where their prey lives — a pattern that pilot
whales repeated.
The small
body size suggests that the species had a limited range, and did not migrate like the
large whales of modern oceans.
Compared with other
bodies of water its size, the Sea
of Cortez supports the
largest and most varied population
of whales in the world: humpback, Bryde's, minke, orca, and sperm
whales also live there.