Grey seals usually only have 1 to 2 babies at a time. On the east coast grey seals have their pups in the autumn. On the west coast these seals have their pups in the winter. The pups only stay with their mother for the first month of their life and then venture off on their own.
The young of seals, dogs, armadillos, bats, beavers, dolphins, foxes, gerbils, guinea pigs, hedgehogs, moles, otters, prarie dogs, rats, coyotes, hamsters, mice, sharks, squirrels, walruses, and wolves are called pups.
Fur seals are mammals and breed like all mammals, through male sperm fertilization of female eggs. Seals are mammals, so mothers carry their young in the womb and pups are born alive to be nurtured by their parents.
Weddell seals and Leopard seals both birth live young and suckle them. These animals are not native to Antarctica no animal is (except for Penguins) but they come to the continent for the birth and nurturing season, to raise their pups to survival age.