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Hammerhead at Cocos. Photo: Jason Buchheim
In this section, we tell the story of sharks. We've prepared this material with marine biologists throughout the world to share with you why sharks are interesting and worth saving. There are about 500 species of sharks beyond the one or two  most people know about. They exist in every marine ecosystem. Sharks have presided over those ecosystems as apex predator for millions of years. Now, sharks are being eliminated by a relatively new apex predator from which sharks have no natural protection: man.

Shark Species: An Introduction

There are over 500 species of sharks. More species are identified each year because of new discoveries and also because DNA testing is enabling more finite identification of species. We have attempted to provide a broad overview of the species and how they are organized. We think you'll be amazed at how varied the world of sharks really is.
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Sharks are in Trouble

Sharks face the threat of extinction for a few reasons: the high demand for shark fins, unintended catch called 'bycatch' and man's fear and ignorance. In this section, we examine these threats to sharks.
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Shark Myths

One of the more interesting aspects of sharks is how they seem to have attracted strong beliefs and emotions in the minds and hearts of people everywhere. Much of what people 'know' about sharks is in fact false, driven by media, literature, fokelore, and ignorance. In this area, we explore some of those myths and try to supplant them with useful information.
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Shark Biology & Behavior

What makes sharks different from other fish? What is the connection between evolution, reproduction, and being at the top of the food chain? What is the range of behavior for sharks? This section, which is still in development, will include the answers to these questions.
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Reproduction of sharks and rays
Elasmobranchs, or sharks and rays, reproduce differently than most bony fish. While sharks have several modes of reproduction, all involve internal fertilization, the production of only a few young, and the means of allowing the young to develop to a stage of greater survivability.
 
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