Seals+-+Tian

Do they have any natural predators?
==== Choose three (3) species of seals and in detail discuss the similarities and differences between them. ==== = = =seals= = =

===There are 35 species of seals in the world, only six type live in Antarctica: Antarctic Fur Seals, Crabeater Seals, Leopard Seals, Ross Seals and Weddell Seals. These six species make up the majority of the world's seal population. Antarctic seals behave much differently than northern seals because they do not have predators such as polar bears or man.=== =Antarctic Fur Seal and Crabeater Seal=

===Seals are classified into three families:ture seals(with no ears), eared seals and waluses. Even without ears, seal hearing out of water is as good as human's, in the water, it is even better. Ture seals use sonar to locate food, much like what dolphins and whales do.===

ture seal's hidden ear =Antarctic Fur Seals= ===Unlike other seals in Antarctica, Antarctic Fur Seals are not ture seals, They are in the eared seal's family. They live on the rocky shores in westen Antarctica. These poor animals are afraid of man because in the 17th century they were badly hunted. Today, their total population was only a few thousand.=== =Crabeater Seals= ===Many people think that Cradeater Seals eat crab, but they mainly eats krill. They live at the edge of the ice. During the breed season, they will form small family groups, there is a mother, father and a pup in each family group. The Cradeater Seal's main predator is the Killer whale. Leopard Seals also prey on Crabeater Seals, but only on the young pups.=== =Leopard Seals= ===Leopard Seals are the largest of the Antarctica seals, they can grow to over 11 feet long. They are commonly found on pack ice, Leopard Seals can eat 40% of the worm blooded animals in the world, but they mainly feed on penguins and small Crabeater Seals.=== =Ross Seals= ===Ross seals were named by a British Navy called James Clark Ross. Female is larger than male, they can grow to two and a half meters. They are identified by their short heads and large eyes, They mainly eat fish and squid. Ross Seals are protected under the Antarctic Treaty.=== =Elephant Seals= ===Elephant can weight 7,900 pound and measure up to 15 feet. They commonly are found througout the Antarctic islands. When they breed, the male fight each other for female. Because of their weight, the pups are crushed under adult seals. Elephant Seals mainly live in islands near or above Antarctica.=== =Weddell Seals= ===Weddell Seals are one of the most common seals in Antarctica, they are often found in groups. Unlike other seals, Weddell Seals prefer to lie on snow and ice even open land is available. Durning winter, they must make lots of breathing holes to catch fish, they can dive 300 meters for food.===