LONGTAIL STINGRAY

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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 There is a large library of reviewed shark books, a constantly outdated shark taxonomy page, a monster list of shark links, and deeper in the site there are numerous articles and stories about shark encounters.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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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.

LONGTAIL STINGRAY

Photograph copyright Andy Murch

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View all available shark and ray images in the SHARKIVE

Common Names: Longtail stingray

Latin Name: Dasyatis longus

Family: Dasyatididae

Identification: Rhomboid disc. Disc margins almost straight. Disc grayish brown to reddish brown. Tail about twice body length. Dorsal finfold absent but with low dorsal keel. Ventral finfold low and long, from base of spine to around half way along tail. Tubercles on shoulders. Eyes small. Ventrum pale.

Size: Disc width to more than one meter.

Habitat: Sand or rubble adjacent to coral or rocky reefs.

Abundance and distribution: Sea of Cortez to Galapagos.

Behavior: Rests in sand during the day.

Reproduction: Ovoviviparous.

Observations: I witnessed many longtail stingrays cruising between reefs at Cabo Pulmo during the middle of the day. They did not appear to be feeding at this time.

Photographs: Cabo Pulmo, Baja. Catalina Grande, Costa Rica .

Similar species: Diamond stingray – Dasyatis dipterura.

Reaction to divers: Skittish. Moves away when approached.

Diving logistics: This species can be encountered around the reefs of Cabo Pulmo especially at Los Morros where it often aggregates with Diamond stingrays. Sightings may be seasonal and these photographs were taken in October. Pepe Dive Centre in Cabo Pulmo can arrange transportation to the reefs and a dive master which is required in the marine park.

Other diving locations submitted by readers:

References and further reading:

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

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