Mammoth

Mammuthus primigenius is more commonly known as the Wooly Mammoth. This Ice Age mammal is similar to a mastodon, but with larger tusks and a sloping back. Even at nine feet tall, it is small for a mammoth.
Mammuthus primigenius has a trunk that is somewhat shorter that that of its cousin the elephant. The trunk ends in two fingers, which the Wooly Mammoth uses to bring food to its mouth. The tusks are larger than those of either an elephant or a mastodon and can be used to clear the snow off of its food. These tusks are curved and extend almost down to the ground to reach low-lying bushes.
The Wooly Mammoth's ability to find food beneath snow and ice made it possible for it to live on the tundra of Europe, Asia, and North America during the Ice Age. Even during the harsh winters, the Wooly Mammoth could find grass and moss under the snow. Wooly Mammoths can also forage for tree bark and other foods typically found above the snow.
Since the Wooly Mammoth prefers to live in colder climates, its coat is made up of a double layer of thick, coarse fur over a three-inch layer of fat. The Wooly Mammoth sheds its fur at the beginning of the summer and regrows it in time for the next winter. An extra hump of fat just behind the animal's skull is built up over the summer and used for nutrition when food is scarce during the winter.

Horseshoe Crab

Horseshoe crabs, common along the Delaware coast, have evolved little in the last 250 million years. Still, they have survived because of their hard, curved shells, which have made it difficult for predators to overturn them and expose their soft, vulnerable underbellies. The horseshoe crab has also survived because it can go a year

without eating and endure extreme temperatures and salinity.The Delaware Bay region is home to the largest population of the American horseshoe crab (Limulus polyphemus),which is found along the western shores of the Atlantic Ocean from Maine to the Yucatan. Another three species live in the coastal waters from Japan to Indonesia.Once called "Horsefoot Crabs" because of the resemblance of its shell to a horse hoof, the Horseshoe Crab isn't really a crab. Related to scorpions, ticks and land spiders, horseshoe crabs have their own classification (Class Merostomata).
Horseshoe crabs, common along the Delaware coast, have evolved little in the last 250 million years. Still, they have survived because of their hard, curved shells, which have made it difficult for predators to overturn them and expose their soft, vulnerable underbellies. The horseshoe crab has also survived because it can go a year
without eating and endure extreme temperatures and salinity.The Delaware Bay region is home to the largest population of the American horseshoe crab (Limulus polyphemus), which is found along the western shores of the Atlantic Ocean from Maine to the Yucatan. Another three species live in the coastal waters from Japan to Indonesia.Once called "Horsefoot Crabs" because of the resemblance of its shell to a horse hoof, the Horseshoe Crab isn't really a crab. Related to scorpions, ticks and land spiders, horseshoe crabs have their own classification (Class Merostomata).Click here to visit a new website from the University or Delaware College of Marine Studies devoted to the Horseshoe Crab.

Each spring during the high tides of the new and full moons, thousands of horseshoe crabs descend on the Delaware Bay shoreline to spawn.
Males, two-thirds the size of their mates, cluster along the water's edge as the females arrive. With glove-like claws on its first pair of legs, the male hangs on to the female's shell and is pulled up the beach to the high tide line.
The female pauses every few feet to dig a hole and deposit as many as 20,000 pearly green, birdshot-sized eggs. The male then fertilizes the eggs as he is pulled over the nest. After the spawning is complete, the crabs leave and the waves wash sand over the nest.

Walruses

Type:Mammal

Diet:Carnivore

Average life span in the wild:Up to 40 years

Size:7.25 to 11.5 ft (2.2 to 3.5 m)

Weight:Upto1.5 tons (1.4 metric tons)

Group name:Herd

Protection status:Endangered

Habitat:Russia,coastal areas from northeastern to Alaska.          

                                                                                                                                       

                

 Appearance-The Walrus's skin is dark brown and wrinkled with little stiff hairs sticking out.Young calves usually have more hair then adults. A walrus's skin is very tough and thick and a polar bear must work very hard to chew through the skin of a dead walrus for food. Walruses molt their skin. Walrus tusks can be very big. Male tusks can be up to 4 ft. and females can be up to 2 ft. Adult males weigh 900 kg. and measure about 3.1m. Female adults weigh about 560 kg. and measure about 2.6m. The Pacific walrus is slightly bigger than the Atlantic. A Walrus is actually an overgrown seal.Walruses are surrounded with wiskers and they smell their food around them with their whiskers. A walruses eyes are very small and it's head looks like it's too big for it's body.

Habitat-Most walruses live in the Alaskan Sea, the Chuckuchi Sea, Bristol Bay, the Bering Sea, the Atlantic and Pacific Sea, the Arctic Sea, Rocky shores, icefloats and icecaps. Most walruses migrate in the spring and fall so they can follow the food.

Grizzly Bear

The range of the grizzly bear once covered most of the western United States, Canada, and Mexico. Relentless human expansion and hunting has diminished the bears habitat to Alaska, western Canada, and a handful of northwest states. In the United States there are grizzly bears in reserves in Montana, Idaho, Wyoming and Washington.Grizzly bear habitat includes a wide range of territories. They can be found in valleys, brush meadows, mountains, and dense forests. They also live near rivers and coastal areas since they like fish.

The grizzly bear is a North American subspecies of the brown bear.These awe-inspiring giants tend to be solitary animals—with the exception of females and their cubs—but at times they do congregate. Dramatic gatherings of grizzly bears can be seen at prime Alaskan fishing spots when the salmon run upstream for summer spawning. In this season, dozens of bears may gather to feast on the fish, craving fats that will sustain them through the long winter ahead.Brown bears dig dens for winter hibernation, often holing up in a suitable-looking hillside. Females give birth during this winter rest and their offspring are often twins.

Grizzly bears are powerful, top-of-the-food-chain predators, yet much of their diet consists of nuts, berries, fruit, leaves, and roots. Bears also eat other animals, from rodents to moose.Grizzlies are typically brown, though their fur can appear to be white-tipped, or grizzled, lending them their traditional name.
Despite their impressive size, grizzlies are quite fast and have been clocked at 30 miles (48 kilometers) an hour. They can be dangerous to humans, particularly if surprised or if humans come between a mother and her cubs. Grizzly bear paw prints will have partial or full nail prints with the tips measuring up to 4 inches. The print of the base will be more oval versus a rounded base.