
In the Region :: Marine
Mammals :: Marine
Turtles :: Strandings
:: Beach Response
Seals
Seals belong to a group of animals called pinnipeds.
There are three sub-groups, or "families"
· True seals or hair seals (Phocidae)
· Eared seals (Otariidae)
· Walruses (Odobenidae)
Seals are not fully adapted to life in the ocean - they must come
ashore to give birth. In contrast, whales give birth under water.
After giving birth, the mother whale guides her baby to the surface
of the ocean for its first breath of air.
Seal pups must stay with their mothers throughout the nursing period,
which varies from a few days to several weeks depending upon the
species. Seal mother's milk is about 50 percent fat. This rich milk
helps her pup add a layer of blubber to keep it warm and to provide
a source of nourishment when it can't find food.
DISTINGUISHING SEALS FROM SEA LIONS
| True Seals - the ones we see in New England
Ex. Harbor Seals and Gray Seals |
Eared Seals- found on the West Coast of
the US
Ex. Sea Lions and Fur Seals |
No external ear flaps. |
External ear flaps |
Rear flippers cannot rotate forward. On land they must
"worm" their way around. |
Hind flippers can rotate forward for movement on the land. |
|