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Pinniped - Wikipedia, the Free Encyclopedia
Pinnipeds, commonly known as seals, are a widely distributed and diverse clade of carnivorous, fin-footed, semiaquatic marine mammals.
https://en.wikipedia.org/wiki/Pinniped
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Seal (Phoca vitulina) - A-Z Animals
The common seal tends to be found in colder waters in many places around the world. Many species of seal inhabit waters in the northern hemisphere and are often found in coastal waters where there is an abundance of food and fewer number of predators.
http://a-z-animals.com/animals/seal/
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Leopard Seals, Hydrurga leptonyx - MarineBio
Find out what's known about Leopard Seals, Hydrurga leptonyx, Mammalia, Carnivora, Phocidae, including their world range and habitats, feeding behaviors, life history, ecology, reproduction, and conservation status.
http://marinebio.org/species.asp?id=160
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Leopard Seal - Hydrurga leptonyx - ARKive
Learn more about the Leopard seal - with amazing Leopard seal videos, photos and facts on ARKive
http://www.arkive.org/leopard-seal/hydrurga-leptonyx/
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Seal - Mammal - Britannica
Seal, any of 32 species of web-footed aquatic mammals that live chiefly in cold seas and whose body shape, round at the middle and tapered at the ends, is adapted to swift and graceful swimming.
http://www.britannica.com/animal/seal-mammal
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Leopard Seal - National Geographic
Using Crittercam, scientists try to learn about the leopard seal's hunting tactics.
http://video.nationalgeographic.com/video/crittercam/seal_leopard
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Seals, Types of Species - About
There are 32 species of seals. Here are 5, including Harbor seals (also called common seals). with links to further information.
http://marinelife.about.com/od/pinnipedssealssealions/tp/Types-Of-Seals.htm
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Seals Species: WWF
Protect endangered species, including the seal, at World Wildlife Fund. Learn about the ways WWF works to conserve a future where people live in harmony with nature.
http://www.worldwildlife.org/species/seals
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Seal Species - Seals-World
There are 18 known species of true seals out there that have been identified. The characteristics of them help scientists to determine which category to place them into. There are two sub families that seals fall into that we will explore. They are Monachinae and Phocinae.
http://www.seals-world.com/seal-species/
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Facts About Seals and Sea Lions - Livescience
Seals and sea lions are semiaquatic mammals with flippers for feet. There are more than 30 species and they live all over the world.
http://www.livescience.com/27870-seals.html
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Harp Seals - National Geographic
Learn all you wanted to know about harp seals with pictures, videos, photos, facts, and news from National Geographic.
http://animals.nationalgeographic.com/animals/mammals/harp-seal