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WHAT IS ELASMODIVER?

Not just a huge collection of Shark Pictures: Elasmodiver.com contains images of sharks, skates, rays, and a few chimaera's from around the world. Elasmodiver began as a simple web based shark field guide to help divers find the best places to encounter the different species of sharks and rays that live in shallow water but it has slowly evolved into a much larger project containing information on all aspects of shark diving and shark photography.

There are now more than 10,000 shark pictures  and sections on shark evolution, biology, and conservation. There is a large library of reviewed shark books, a constantly updated 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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SILKY SHARK

silky shark profile

 

Photograph by Andy Murch

View all available Silky Shark Pictures in the Shark Pictures Database

Common Names: Silky shark

Latin Name: Carcharhinus falciformis  

Family: Carcharhinidae  

Identification: Long pointed snout. Interdorsal ridge present. Low rounded first dorsal fin originates behind pectoral axis. Small second dorsal with long free rear tip. Pectoral fins long with dusky or black tips on underside. Second dorsal much smaller than first. Dorsal body coloration olive brown with distinctive reflective sheen that gives this shark its common name.

Size: Maximum length 3.3m. 70 to 87cm at birth. 

Habitat: Prefers offshore islands, sea mounts, drop offs and vertical rocky or coral reefs. To 500m depth. One of three species (also including Oceanic Whitetip and Blue Shark) of sharks that patrols the open ocean.

Abundance and distribution: Circumtropical.    

Behavior:  Arching back threat display recorded.

Reproduction: Viviparous. Litter size 2 - 14.

Observations: Often seen with Scalloped Hammerheads at sea mounts.

Photographs: Galveston, Texas.

Similar species: Although the silky shark is superficially similar to many other carcharinid species, it is easily recognizable by its shiny skin and low rounded first dorsal.

Reaction to divers: Reactions vary depending on size, location, and style of interaction. In Galveston, Texas the silky sharks tend to be small and therefore hard to approach where as at Cocos Island in Costa Rica there are so many large and aggressive silkies that at times it is not safe to enter the water as they may bump and possibly bite divers.

Diving logistics: Probably the best place to interact with Silky Sharks is Cocos Island (Costa Rica) where hundreds of Silkies aggregate. These sharks are visible on practically every dive and they also hang around the dive boat at night. The Undersea Hunter runs week long live aboard trips to Cocos each week from Punta Arenas.

Other diving locations submitted by readers: 

Further reading:  

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

Sharks and Rays - Elasmobranch Guide of the World. Ralf M. Hennemann. IKAN.

The Shark Watcher's Handbook - Mark Carwardine & Ken Watterson. Princeton University Press.

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