:39:09
the killer whales circle the prey
as if toying with it
:39:13
in fact
:39:14
they may be demonstrating
to their young how to
:39:17
cut off a prey's retreat
or how to confuse it
:39:22
more important the
calves will learn how to
:39:25
coordinate their efforts
with others in the pod
:39:41
older males have been observed
allowing calves to feed
:39:45
before they themselves
begin to eat
:39:48
the young will grow into
the ocean's top predators
:40:01
like killer whales, pilot whales
are misnamed and are true dolphins
:40:08
the second largest
of the family
:40:11
they can weigh up
to four tons
:40:14
pilot whales dive to
depths of a half mile
:40:17
in search of octopus
and squid
:40:35
these pygmy killer
whales may be every
:40:37
bit as fierce as
their namesakes
:40:39
and like their bigger
cousins, they're
:40:41
believed to kill
marine mammals
:40:44
but pygmy killers are very rare
and seldom observed in the wild
:40:55
there are over thirty
species of dolphins
:40:58
and we know very little
about most of them