Elasmodiver contains photos of sharks, skates, rays, and chimaera's
from around the world. Elasmodiver began as a simple web based
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
shark, Common nurse shark, Atlantic nurse shark.
Latin Name: Ginglymostoma
brown or gray body, paling slightly towards belly. Two dorsal fins of almost
equal size close to tail. Head bulbous with small mouth. Mouth has a barbell on
each side. Tail narrow with a large upper caudal lobe and no distinct lower
Size: 5 to
9ft max. 14ft.
in many environments including reef flats, sandy areas, lagoons, and mangroves.
From intertidal to 150ft.
is the most commonly encountered shark on most Caribbean reefs. It can be
locally common from Florida to Brazil.
the Atlantic coast of the Americas from Rhode Island to Brazil. Bermuda and the
Eastern Atlantic from Senegal to Gabon. Also in the Eastern Pacific from Baja
California to Peru.
Sleeps under overhangs of reefs, or in mangroves during the day. Often found
sleeping in small groups. At night forages for spiny lobsters, crabs, octopus,
and sea urchins etc. May inhabit same area for many years.
one night dive, I observed a Nurse darting in and out of our flashlight beams,
possibly using the light for hunting but his agitated swimming suggested more
that we were intruding.
rock, Grenadines, St Vincent (top). Tiger Beach, Bahamas (bottom).
The nurse sharks shares
its Eastern Atlantic range with the West African nurse shark – Ginglymostoma
Reaction to divers: During
day lies motionless unless closely harassed. Will bite if provoked. Nurse sharks
are opportunistic and become regular visitors to shark feeds.
Diving logistics: Nurse
sharks are extremely common sights in many areas of Florida and the Caribbean.
Until recently banned, Florida shark feeding dive boats out of Fort Lauderdale
and Boca Raton, were guaranteed Nurse watching experiences. The Sea Emperor
wreck off of this same coastline usually has a group of Nurses sleeping under
the bow. More remote places in the Caribbean such as Sail Rock in the Grenadines
usually have Nurses lying under every available overhang. This dive sight is
accessible using Dive Grenadines out of Union Island.