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Not just Shark Pictures: Elasmodiver contains photos of sharks, skates, rays, and chimaera's from around the world. It began as a simple web based field guide to help divers find the best places to encounter different species of sharks and rays but it has slowly evolved into a much larger project containing information on all aspects of shark diving and photography. There are now more than a thousand shark pictures  and sections on shark evolution, biology, and conservation. There is a large library of reviewed shark books, a constantly outdated shark taxonomy page, a monster list of shark links, and deeper in the site there are numerous articles and stories about shark encounters. Elasmodiver is now so difficult to check for updates, that new information and pictures are listed on an Elasmodiver Updates Page that can be accessed here:

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Shark picture - green sawfish

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ELASMODIVER EXPANDED

If you're looking for a broader range of marine life pictures the following links represent a new area that contains pictures on other marine organisms and on marine habitats. This expansion of Elasmodiver is in its first stages but will eventually include pages on everything from sea stars to nudibranches. Creating this portal will take time and for now it consists of a token offering of fish pictures. Please return regularly to enjoy the progress.

 

FISH PICTURES

 

 

 

 

BULLSEYE STINGRAY

 

Photograph copyright Andy Murch

View all available Bullseye Stingray pictures in the SHARKIVE

Common Names: Bullseye Stingray, Bulls-eye Stingray, Concentric Stingray, Spot-on-spot round ray.

Latin Name: Urobatis concentricus. Previously classified as Urolophus concentricus.

Family: Urobatidae

Identification: Almost circular oval disc. Dorsum markings consist of dark concentric rings on a pale background. The outermost ring is often broken into small spots. The broader central rings are linked by bars forming a bold laterally symmetrical web pattern.

Size: Maximum length 60cm

Habitat: Shallow sandy bays and around rocky reefs. Intertidal to at least 20m.

Abundance and distribution: Predominantly found in the Sea of Cortez and possibly south to the Galapagos Islands.

In Cabo Pulmo the Bulls-eye Stingray is more frequently observed in the winter.

Behavior: Forages over sand for worms and crustaceans.

Reproduction: Ovoviviparous. Gravid females exude milk from the wall of the uterus.

Photographs: Cabo Pulmo, Baja , Mexico.

Similar species: The Bullseye stingray shares its range with the Cortez Round Stingray which is sometimes almost identical but usually displays a more broken pattern of spots oand blotches, and the Round Stingray (Urobatis halleri) which has a similar but barely definable pattern over a network of fine light and dark spots.  

Reaction to divers: Moves away upon close approach.  

Diving logistics: This species is commonly encountered while diving and snorkelling over sand or near rocky reefs in the southern Sea of Cortez . In March at Cabo Pulmo I encountered the Bullseye stingray on every dive at around 50ft. On a previous trip during the summer none were present implying that this ray has at least a minor migration, perhaps into slightly deeper water where the temperature is more moderate.

Other diving locations submitted by readers:

References and further reading:

Reef Sharks and Rays of the World. Scott W. Michael. Sea Challengers.

Sharks and Rays Ralf M. Hennemann

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