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Learn About Seals and Sea Lions

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Information on both the differences and similarities of seals and sea lions.

 

There are 33 species of seals, sea lions, fur seals and walrus that populate the world's oceans and lakes.  All pinnipeds breath air and some are capable of very deep and prolonged dives.  The northern elephant seal, for example, is capable of diving to depths over 1,500 feet and can remain under the surface of the water for 2 hours
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Seals And Sea Lions 

Seals And Sea Lions (The Living Ocean)

Amazon Price: $6.95 (as of 09/04/2008)

# Reading level: Ages 9-12
# Paperback: 32 pages
# Publisher: Crabtree Children's Books (November 2005)

All About Seals, Sea Lions, and Walruses 

All About Seals, Sea Lions, and Walruses
Information on both the differences and similarities of seals and sea lions.
Southern Elephant Seal
Provides information about elephant seals. Information includes habitat, description, and food sources.
Sea Lions
General information on "Zalophus californianus californianus," otherwise known as a sea lion.
The Marine Mammal Center
The mission of The Marine Mammal Center is to rescue and humanely treat ill, injured, or orphaned marine mammals including seals, sea lions, sea otters, dolphins and whales, and to advance knowledge about marine mammal health. Explore The Center's web site to find out how you can help support marine

Steller 

The Steller sea lion is the largest otariid species, and males can weigh over 2,000 pounds (1,120 kg). Most Steller sea lions live in Alaskan waters, but about 500 live in California. The population is dropping, and they are on the endangered species list. Scientists are not sure why their numbers are dropping, but think it could be due to a change in the ocean ecosystem and competition from commercial fishing.

Pinnipeds, fin-footed marine mammals 

Pinnipeds, fin-footed marine mammals, are divided into two categories: earless seals (true seals) and eared seals (sea lions). Earless seals like the Northern elephant seal and harbor seal are believed to have descended from a line of terrestrial mammals similar to otters. Eared seals like the California sea lion and the Northern fur seal are believed to have descended from a bear-like mammal. Adaptations like fins for mobility, blubber for warmth and hydrodynamic body shape help both species survive in an aquatic habitat.

 

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Great Book 



Reviewer: Marc Gyssens (Antwerp, Belgium) - See all my reviews
I like this book book very much for its completeness (at least at the species level, but subspecies are discussed in the text), the combination of drawings and photographs, and the extensive information. In my opinion, drawings are much more useful for identification than photographs, and are therefore a must in a field guide, but it helps a lot when this is complemented with a few good photographs. Detailed distribution maps as well as information on behavior are very helpful in the identification process. Because of the extensive information, the book is an identification guide and a reference book at the same time. Despite the number of pages, the size is still sufficiciently practical for a field guide.

Sea Mammals of the World

Amazon Price: $49.63 (as of 09/04/2008)

They're mammals. 

Harp Seal, Pup in Favorite Position on Its Back on Ice Pack, Nova Scotia, Canada

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Pinnipeds share five common characteristics with other mammals. They're warm-blooded (maintain a high and constant body temperature independent of the surroundings), give live birth, nurse their young, breathe air, and have hair. Since they live in the marine environment and they find their food at sea, pinnipeds are called marine mammals. Other marine mammals include whales and sea otters.

 

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