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Sharks have been around for about 350 million years and have remained virtually unchanged for the past 70 million years and still comprise a dominant group. They live in waters all over the world, in every ocean, and even in some rivers and lakes.

Unlike bony fish, sharks have no bones; their skeleton is made of cartilage, which is a tough, fibrous substance, not nearly as hard as bone. Sharks also have no swim bladder (like bony fish do).

Enchanted Learning - All about sharks!
This is an ideal place to start with a comprehensive site designed for students:

Major areas covered are: Anatomy and Physiology, Shark Info Sheets, Shark Printouts, Megalodon: Ancient Giant, Rays, Shark Dictionary, Shark Pop-up card.

The Anatomy and Physiology section includes: size, body shapes, varieties of sharks, skeleton, teeth, diet, do sharks sleep?, shark feeding frenzyattacks, intelligence, habitat, migration, evolution,and extinct sharks. There are also information sheets on over 30 species of shark.

How Sharks Work
From the HowStuffWorks site. An exellent introduction including, Shark Anatomy, Underwater, Basic Shark Senses, Extra Shark Senses, Shark Teeth, Daily Life of a Shark, Threats to Sharks, Lots More Information!, What do you think?

Seaworld Education Department Resource:
Sharks & Rays

Another site with a wealth of information on sharks. Major topics covered are: Scientific Classification, Habitat and Distribution, Physical Characteristics, Senses, Behaviour, Diet and Eating Habits, Reproduction, Anatomy and Physiology, Hydrodynamics,
Longevity and Causes of Death, Classification, Bibliography,
Books for Young Readers

Tiger shark jaws

Shark Attacks

Shark Research Committee
The website of the Shark Research Committee. It covers Shark/Human Interactions Along the Pacific Coast of North America with case histories of attacks, statistics and more.

Jaws Returns?
A university student's paper on shark attacks with links to more information on shark attacks.

More information

Sharks of Alaska

Find out about the salmon shark, the Pacific sleeper shark, the spiny dogfish shark and more.

Well illustrated and plenty of information about the species.

This is part of the Conservation Science Institute website. Their mission is to provide credible scientific analysis for recovery and conservation of ecosystems and to develop human systems that promote sustainable interactions with nature.

All about Sharks - Compiled by Stephen Bilson
An Australian site with a lot of information on sharks including the following topics:Shark Photo Gallery, Sharks - Cutting through the myths, Shark's - Their Amazing Physiology, Shark Attack - Case Studies & Reports, Shark Reporting Form, Shark Cartoons Page and more.

Shark Anatomy pages
Click on the part to find out more.

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