Harp seals migrate in large groups as much as five thousand miles (8,000 km) from feeding grounds in the north to breeding grounds in the south.
They spend about half the year in the north, feeding on fish and invertebrates.
In the spring, thousands of females congregate on pack ice to give birth and nurse their white-furred pups.
Following weaning, the pups shed their white fur, which is replaced by silver-gray pelage with dark spots. After successive molts, the spots are replaced by the typical harp-shaped marking on the back.
By June the harp seals are moving northward again, swimming and cavorting in the frigid water.
There are three populations of this gregarious seal: one off Newfoundland, one in the Arctic Ocean, and one off Greenland.
Name: Harp Seal (Phoca groenlandica)
Family: Phocidae (Earless Seals)
Range: Northern Atlantic and Arctic oceans
Habitat: Arctic waters and ice floes
Diet: Cod, capelin, herring, halibut, and small crabs
Total Length: 4.6 to 6.6 feet (1.4 to 2 m)
Weight: 220 to 320 pounds (100 to 145 kg)
Life Cycle: Mating February to April, implantation delayed 60 to 90 days; gestation 210 to 240 days, one pup born
Description: Silver-white fur; black head; dark markings on the back that resemble harps; wide face; close-set eyes
Conservation Status: Common
 Order: Salmoniformes, Family: Salmonidae Typically spend the first year of their life in fresh water. Upon moving to the ocean, growth increases dramatically. At about the third year, coho salmon reach maturity.
They weigh from 6 to 12 pounds and can be up to 38 inches in length.
Oncorhynchus kisutch are deep-bodied salmon with unique color characteristics. The dorsal surface is a metallic blue while the sides are a silver color....
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 Order: Sirenia, Family: Trichechidae The Amazon Basin of Brazil, Colombia, Ecuador, Guyana and Peru.
The Amazon ox manatee is gray and bears a white patch on its chest or several white markings on its chest and abdomen. Its body is covered with fine hairs and its upper and lower lips are covered with thick bristles. It has two mammary glands near its armpits.
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 The manatee, often called the sea cow, is the only exclusively herbivorous marine mammal. It grazes on all kinds of aquatic plants, especially marine sea grasses, assisted by its large prehensile lips, which are studded with bristles.
During the day, it is frequently found close to the surface, sleeping within the top three to ten feet (1 to 3 m). Occasionally it swims down to thirty feet (10 ...
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 Well, their brains, of course. Dolphins have large brains for their bodies — in fact, a bottlenose dolphin is second only to humans in the ratio of brain size to body size. Researchers have also pointed to the parallels in the organization of dolphin and primate brains as more evidence of high intelligence in dolphins. Some have gone so far as to suggest that dolphins actually have a language that...
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 Unlike any other mammal, dolphin babies are born tail first!
Dolphins have very little sense of smell!
A mother dolphin will stay with a calf for two to three years!
Dolphins, like cows, have two stomachs — one for storing food and one for digesting it!
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 Order: Carnivora, Family: Mustelidae Male sea otters average 5 feet and 70 pounds; females average 4 feet and 60 pounds.
They are dark brown with lighter heads that turn grayish white with age.
Sea Otters live in shallow coastal waters, especially kelp beds.
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