Penguin seal carbon dating
There are 16 species of eared seals; seven of them are sea lion species. Harp, ringed, hooded, spotted, bearded and ribbon seals live in the Arctic.
One of the most recognized species, according to the NOAA, is the California sea lion, which is often featured doing tricks at zoos and aquariums. Crabeater, Weddell, leopard and Ross seals live in the Antarctic.
Males are very territorial when it comes to mating.
They sometimes skip eating for a few days, and often stop eating completely during mating season and will live off energy from their stored-up blubber for weeks.
True seals have thin fur and use blubber for insulation. The smallest is the ringed seal, with an average length of 5 feet (1.5 m) and a weight of 110 to 150 lbs. Unlike other seals, males and females are about the same size.
There are 18 species of true seals, according to Seals World. The ringed seal is the most common seal in the Arctic, according to the National Oceanic and Atmospheric Administration (NOAA). [Gallery: Seals of the World] True seals typically live in the cold ocean waters of the Arctic or off the coasts of Antarctica. Others never leave the ice pack and poke breathing holes in the ice, according to the National Snow and Ice Data Center.
Seals generally prey on fish, but they will also eat eel, squid, octopus and lobster.
Leopard seals will eat penguins and smaller seals, according to Seals World.