: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
:41:01
the northern right whale dolphin
is a gregarious
:41:04
creature often found
swimming with other species
:41:07
like white-sided dolphins.
:41:11
Dolphins come in a
variety of sizes and shapes
:41:15
what distinguishes
them as a family are anatomical
:41:18
features like the shape
of the jaws and teeth
:41:24
dolphins are designed
for the hunt
:41:39
this fifty ton monster
is a grazer not a hunter
:41:44
and it's a true whale
:41:51
southern right whales
are filter feeders
:41:54
straining enormous quantities
of water for tiny crustaceans