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
rounded snout with sharp leading edge. First dorsal fin originates behind
pectoral axis. Dorsal pointed. Pectoral fins slightly sickle shaped dusky tips on underside. Low interdorsal ridge present.
Low second dorsal and anal fin usually have dusky tips. Pectoral and pelvic fins
can also have dusky tips. Well developed caudal fin with dusky trailing edge. Body fairly
monochrome greyish brown above and pale below.
length 4.2m. 70
to 100cm at birth.
Usually found around continental
coastlines. To 400m depth.
Behavior:Feeds actively during the day. Diet includes: Bony fishes, other
sharks and rays, and some crustaceans and moluscs.
Litter size 3 - 14. Uses shallow water regions for nursery grounds.
After baiting Dusky Sharks in an
area for one afternoon the boat returned to port. The next day the same easily
recognizable Dusky Sharks were able to find the boat and join the feed within a
few minutes even though it had relocated to another sea mount.
Galapagos shark (Carcharhinus galapagensis) First dorsal originates over pectoral
axis. Prefers offshore islands and sea mounts.
Reaction to divers:
In baited situations Duskies can become very aggressive. While snorkelling near
the bait I observed them trying to bite my fins whenever my kicking speed
increased. They are easily excited and their large size makes them potentially
very dangerous. However, outside of baited situations it is very difficult to
find Duskies while diving. Dusky sharks have been known to repeatedly attack
Walker runs the only Dusky Shark interaction that I am aware of. He has a good
record of chumming up large numbers of Duskies on demand at the offshore rigs
and seamounts near Venice, Louisiana. Al runs private charters for highly
experienced divers only. On my last trip to Venice he was able to attract
approximately 60 Dusky Sharks in the 6 to 10ft range.
Other diving locations submitted by
Sharks and Rays of the World. Scott W. Michael. Sea Challengers.
and Rays - Elasmobranch Guide of the World. Ralf M. Hennemann. IKAN.