Baby seals are called pups. The males of land-breeding species tend to mate with a greater number of females than those of ice- or water-breeding species. Male pinniped strategies for reproductive success vary between defending females, defending territories that attract females and performing ritual displays or lek mating. Pups are typically born in the spring and summer months and females bear almost all the responsibility for raising them.
Mothers of some species fast and nurse their young for a relatively short period of time while others take foraging trips at sea between nursing bouts. Male pinnipeds typically mate with more than one female (polygyny), although the degree of polygyny varies with the species.