The life span of seals ranges from 15 to 40 years, depending on the sex, specie and living conditions. Female seals have longer life spans as compared to their male counterparts going up to 40 years of age. Males, because have to hunt for food, fight off other animals, protect their family and clan, normally live from 15 to 20 years. Seals living in natural habitat tend to live shorter as compared the living in protected environments. Seals are easily identifiable from their unique body types and their movement. By now, there are more than 16 different species of seals in the world having different sizes and body types. Usually Elephant seals live shorter as compared to earless seals and fur seals. Seals are more prone to life threats during the mating season or during summer when other animals are also looking for food.

Seals are carnivorous mammals, however they spend most of their time under the sea. At one stage various species of seals were on the verge of extinction because of excessive hunting by local inhabitants, however with the intervention of various marine life protection organizations, it hunting was banned. As a result, seal population has shown a considerable growth in the last few years. Enemies include large sharks, killer whales, leopard seals and polar bears which can become the instant killer at any time. Now its most important enemy is human because human beings are creating disturbance in their natural living environment. Their numbers are decreasing with rapid pace because of this human interference.