Chordata: Chondrichthyes (rays, sharks, skates)

Elasmobranch Biological Profiles
You'll find images and profiles of over 100 species of sharks, rays, sawfish at this site from the Florida Museum of Natural History.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: Yes

Sharks: Myth and Mystery
Dive in to the world of sharks at this site from the Monterey Bay Aquarium. You can view shark video and see shark images, learn how you can help save sharks, and try your hand at some shark crafts, games, and activities. You can even see a hula dance telling the story of Kamohoali'i, the legendary shark god.
Intended Audience: General/Students Reading Level: Elementary/Middle School Teacher Section: No Searchable: Yes

Sharks at Risk
Learn about some of the risks shark populations are facing at this site from Jean-Michel Cousteau Ocean Adventures. You'll find video clips, interactives, and loads of information about sharks and some of the dangers they face.
Intended Audience: General Reading Level: Middle School Teacher Section: Yes Searchable: Yes

Shark Mountain
Nature travels to Cocos Island of the coast of Costa Rica. Its waters are home to a staggering number of shark species, including silkies, hammerheads, black-tip reef sharks, white-tip reef sharks, silver-tip reef sharks, whale sharks, and marbled rays. You can view the entire episode, learn the truth about some shark myths, and learn about the effect of long-line fishing on sharks.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: Yes

Shark School
How much do you really know about sharks and rays? Learn more at this site for kids that features a shark glossary, shark FAQs, a section on shark anatomy, and shark games.
Intended Audience: Students Reading Level: Elementary School Teacher Section: No Searchable: No

Zoom Sharks
This site from Enchanted Learning has shark fact sheets and printouts, a shark dictionary, classroom activities, and information about sharks and rays.
Intended Audience: Students Reading Level: Elementary School Teacher Section: Yes Searchable: No

Sharks and Rays
Check out this "infobook" from Seaworld. It covers habitat, distribution, anatomy, senses, adaptations, behavior, diet, reproduction and includes a book list for young readers.
Intended Audience: Students Reading Level: Middle School Teacher Section: No Searchable: Yes

Fishes
You'll find images and information about a number of shark and ray species at this site from the Monterey Bay Aquarium.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: No

Sharkland
This companion site to the Nature episode looking at sharks in the waters off the coast of southern Africa includes an interactive anatomy of the great white shark, and information about cat sharks and animal cannibalism.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: Yes

The Secret World of Sharks and Rays
Learn more about sharks and rays at the companion site the the episode of the PBS series Nature. You'll also find two lesson plans about sharks and rays.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: Yes

Sharks and Rays of the World
This site from Elasmodiver has nice collection of images and information about a number of shark and ray species found around the world. Since the site is aimed at divers, you'll also find tips for diving with sharks and rays.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: Yes

Chondrichthyes
You'll find information about sharks and rays at this site from NHPTV's Wildlife Journal Junior.
Intended Audience: Students Reading Level: Elementary School Teacher Section: Yes Searchable: No

Chondrichthyes
You'll find images, descriptions, and specimens of sharks and rays at this site form Animal Diversity Web.
Intended Audience: General Reading Level: High School Teacher Section: Yes

Introduction to the Chondrichthyes
You can learn more about sea squirts at this site from the University of California Museum of Paleontology.
Intended Audience: General Reading Level: High School Teacher Section: No Searchable: No

Class Chondrichthyes
This site from the Smithsonian Marine Station at Fort Pierce has information about some species of shark.
Intended Audience: General Reading Level: Middle School Teacher Section: No Searchable: Yes

Interactive Anatomy: The Great White's Weapons
Click on a great white shark and learn about its anatomy.
Source: PBS Nature

Predator Protector Game
Swim with the sharks and experience some of the dangers they face.
Source: PBS Jean-Michel Cousteau Ocean Adventures

Vanishing Sharks
Discover why shark populations are declining.
Source: PBS Jean-Michel Cousteau Ocean Adventures

Fish and Games
See if you can tell the difference between shark myths and fact, check out you knowledge of shark facts, or try your hand at an interactive shark word search puzzle.
Source: San Diego Natural History Museum