Cartilaginous Fish Chordata Animalia Flora and Fauna

Class Chondrichthyes includes chimaeras, sharks and rays. The skeletons of these fish are composed of cartilage and do not contain true bone although the notochord is calcified to form bone-like vertebrae. They are also distinguished from the bony fish in lacking a swim bladder and bony operculum protecting the gills. The scales do not overlap and the tail is typically asymmetric, having a larger upper lobe.

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• Sharks: Lords of the Sea - Site dedicated to shark information and conservation. Includes many drawings.
  
• 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.
  
• Shark Research Committee - Research of North America's Pacific Coast sharks, including White Shark (Carcharodon carcharias) diet, distribution, behavior, encounters, and attacks.
  
• Shark - Wikipedia provides a great deal of information about sharks, their biology and classification, accompanied by photographs and diagrams.
  
• Class Chondrichthyes - Taxonomic information on cartilaginous fishes: sharks, rays and chimaeras.
  
• Sharkology - Information on the biology, ecology, morphology and behavior of this species. In English and Swedish.
  
• Shark Photographs - Underwater photographs and information about many species of sharks and rays.
  
• Infoplease - Sharks! - Myths, facts, and statistics, how to avoid a shark attack, and the shark hall of fame.
  
• 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.
  
• Shark-Info.com - Shark photos, information, history, and myths.
  
• IUCN/SSC Shark Specialist Group Newsletter - Shark research and conservation organization.
  
• Reefquest Expeditions' Shark Research Program - An illustrated guide to shark diversity with special focus on selected aspects of shark biology and behavior.
  
• How Sharks Work - Tutorial with a jaw animation and photos.
  
• Sharks and Rays - Informational booklet including classification, habitat, distribution, life cycle, anatomy and physiology.
  
• Sharks - Gallery of hundreds of images of sharks photographed by Stephen Wong.
  
• Richard Ellis Gallery of Sharks - Provides illustrations and information on various species.
  
• Swell Shark: Cephaloscyllium ventriosum - Photograph of an embryo of this species developing inside its “mermaid purse” egg case.
  
• Canadian Shark Research Laboratory - An information source on sharks and shark fisheries in Atlantic Canada (English and French)
  
• Torpedoes, Skates and Rays: Order Batoidei - Characteristics of these fish in the subclass Elasmobranchii, which includes the Torpedoes, Skates, Sting Rays and Devil Rays.
  
• Sharkworld - An insight into the fascinating world of sharks. Full profiles of sharks, shark attacks, and shark biology.
  
• Shark-L - Archives of the e-mail group for discussion of sharks and cartilaginous fish.
  
• GoldenStateImages - Sharks of the California Coast - Photography of sharks found off the California coast includes blue shark, and mako shark.
  
• Shark Foundation - Facts, images, and information on projects and activities organized by the foundation. In English and German.
  
• Introduction to the Chondrichthyes - UCMP Berkeley's introduction to the cartilaginous fish, including sharks.
  
• American Elasmobranch Society - An organization devoted to the study and conservation of sharks, rays, skates and chimeras.
  
• Dedicated Shark Site - Provides detailed information on many shark species and general information about sharks.
  
• Egg-Capsules of Sharks, Skates, and Chimaeras - Includes information, photos, and a bibliography.
  
• Sharks Gallery - Photos of sharks with no text.
  
• 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,
  
• Shark Trust - Information on many different species of shark, species lists, conservation information, great white and shark attack.
  
• Greater Spotted Dogfish - Several photographs and information on this species, Scyliorhinus stellaris.
  
• Henry Mollet's Elasmobranch Page - Information, including photos and statistics, about elasmobranch research in the Monterey Bay area of California.
  
  

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