The only predators of adult Gray
Whales are humans
and Orcas
There are hairy bristles (vibrassae)
on the gray whale's snout and the
front of the head. These are used
as tactile sensors, like cat's whiskers.
Spyhopping is another gray whale
activity in which the whale pokes
its head up to 10 feet (3 m) out
of the water, turning around slowly,
to take a look around.
Gray whales sleep with their blowholes
just exposed on the surface of the
water. During their extended migration
they swim day and night, not sleeping.
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