Shark
- Wikipedia provides a great deal of information about sharks, their biology and classification, accompanied by photographs and diagrams.
- http://en.wikipedia.org/wiki/Shark

Greater Spotted Dogfish
- Several photographs and information on this species, Scyliorhinus stellaris.
- http://web.ukonline.co.uk/aquarium/pages/greaterspotteddogfish.html

Swell Shark: Cephaloscyllium ventriosum
- Photograph of an embryo of this species developing inside its “mermaid purse” egg case.
- http://www.coldwaterimages.com/swell_shark.html

Sharks
- Gallery of hundreds of images of sharks photographed by Stephen Wong.
- http://www.stephenwong.com/gallery/sharks

Torpedoes, Skates and Rays: Order Batoidei
- Characteristics of these fish in the subclass Elasmobranchii, which includes the Torpedoes, Skates, Sting Rays and Devil Rays.
- http://www.gma.org/fogm/Batoidei.htm

Cartilaginous Fishes: Class Chondrichthyes
- The most distinctive feature of this class is that their entire skeleton, including the skull, is cartilaginous without any true bone. The class include the sharks and rays, many of which are described here.
- http://www.gma.org/fogm/Chondrichthyes.htm

Canadian Shark Research Laboratory
- An information source on sharks and shark fisheries in Atlantic Canada (English and French)
- http://www.marinebiodiversity.ca/shark/english/index.htm

Sharkology
- Information on the biology, ecology, morphology and behavior of this species. In English and Swedish.
- http://www.sharkology.com/

Center For Shark Research
- An international center for research, scientific collaboration, consulting, education, and public information on sharks and their relatives, the skates and rays. The CSR research mission includes basic and applied studies of all aspects of shark biology,
- http://www.mote.org/index.php?src=gendocs&id=101&category=Shark%20Research

CSIRO Marine: Tagging Research
- Provides photos and details of range studies conducted on Rhincodon typus, Carcharias taurus, and Carcharodon carcharias. Includes fact sheets and maps.
- http://www.marine.csiro.au/research/pelagic/tagging/

Clark, Dr. Eugenie - Ichthyologist
- Information about the renowned shark researcher, including answers to questions about her shark-related adventures.
- http://www.sharklady.com/

Shark Photographs
- Underwater photographs and information about many species of sharks and rays.
- http://www.oceanlight.com/html/sharks.html

Infoplease - Sharks!
- Myths, facts, and statistics, how to avoid a shark attack, and the shark hall of fame.
- http://www.infoplease.com/spot/sharks1.html

Shark-Info.com
- Shark photos, information, history, and myths.
- http://www.shark-info.com/

American Elasmobranch Society
- An organization devoted to the study and conservation of sharks, rays, skates and chimeras.
- http://www.flmnh.ufl.edu/fish/Organizations/aes/aes.htm

Egg-Capsules of Sharks, Skates, and Chimaeras
- Includes comprehensive information, many photos, and an extensive bibliography.
- http://www.rajidae.tmfweb.nl/

Shark Foundation
- Facts, images, and information on projects and activities organized by the foundation. In English and German.
- http://www.shark.ch/

Sharks Gallery
- Photos of sharks with no text.
- http://seashadows.narod.ru/

Shark Friends
- Information and photos about sharks and other ocean animals.
- http://www.sharkfriends.com/

Shark Research Committee
- Research of North America's Pacific Coast sharks, including White Shark (Carcharodon carcharias) diet, distribution, behavior, encounters, and attacks.
- http://www.sharkresearchcommittee.com/

Henry Mollet's Elasmobranch Page
- Information, including photos and statistics, about elasmobranch research in the Monterey Bay area of California.
- http://homepage.mac.com/mollet/

Class Chondrichthyes
- Taxonomic information on cartilaginous fishes: sharks, rays and chimaeras.
- http://animaldiversity.ummz.umich.edu/chordata/chondrichthyes.html

GoldenStateImages - Sharks of the California Coast
- Photography of sharks found off the California coast includes blue shark, and mako shark.
- http://www.goldenstateimages.com/shark.htm

Sharkworld
- An insight into the fascinating world of sharks. Full profiles of sharks, shark attacks, and shark biology.
- http://www.sharkworld.co.uk

Sharks: Predators of the Deep
- Photo gallery and information by Jan Koetze.
- http://www.xs4all.nl/~jkoetze/

How Sharks Work
- Tutorial with a jaw animation and photos.
- http://www.howstuffworks.com/shark.htm

Reefquest Expeditions' Shark Research Program
- A comprehensive, illustrated guide to shark diversity with special focus on selected aspects of shark biology and behavior.
- http://www.reefquest.com

ElasmoWorld
- Elasmobranch searchable biological and reference database with over 4000 entries and 10,000 keywords.
- http://www.elasmoworld.org

Shark-L
- Archives of the e-mail group for discussion of sharks and cartilaginous fish.
- http://raven.utc.edu/archives/shark-l.html

IUCN/SSC Shark Specialist Group Newsletter
- Shark research and conservation organization.
- http://www.flmnh.ufl.edu/fish/Organizations/SSG/newsletter.htm

Shark Trust
- Information on many different species of shark, species lists, conservation information, great white and shark attack.
- http://ds.dial.pipex.com/sharktrust/

Shark Research Program at the University of Florida Museum of Natural History
- Attack statistics, breaking news about sharks, information about Great white and Megamouth sharks, shark attack file, and a commercial shark fishery observer program.
- http://www.flmnh.ufl.edu/fish/Sharks/Sharks.htm

Introduction to the Chondrichthyes
- UCMP Berkeley's introduction to the cartilaginous fish, including sharks.
- http://www.ucmp.berkeley.edu/vertebrates/basalfish/chondrintro.html