Articles by Dive and Travel Experts on a wide variety of Scuba Diving subjects.
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A weird creature indeed, the Striated Frogfish is one of the world’s weirdest looking fish to inhabit the ocean.
Why do they call it the hairy frogfish? Their body is covered in 1,000’s of fleshy spines that looks just like… you guessed it… hair. These hair like body extensions are called spinules and help the frogfish to blend into coral, sponges and sea weed. These unique “hairs” can also change color to match their surroundings, making this fish extremely difficult to spot on the ocean floor.
Frogfish are masters of disguise. Frogfish, a type of anglerfish, have a textured exterior that aids in their camouflage. While they do not have scales, their amazing ability to camouflage themselves serves as protection from predators. Frogfish vary in color and often have unique spines or bumps that change with their surroundings.
April 1, 2016 | SDRStaff
From: Science Network Western Australia
by Rebecca Graham
RECREATIONAL dive guides collecting data on grey reef sharks (Carcharhinus amblyrhynchos) have uncovered more information than traditional acoustic telemetry tags—signifying a win for citizen science.
The research partnership between UWA, the Australian Institute of Marine Science and the Micronesian Shark Foundation in Palau presented a unique opportunity to test the reliability of shark counts collected by recreational dive guides at popular diving sites in Palau.
March 30, 2016 | SDRStaff
By Chim Carlson
On my recent trip to Roatan, I and my fellow dive travelers, veterans of countless night dives, were treated to a magical and fascinating first time experience. I only wish photos or videos could be taken to show you what truly amazed us.
Two biologists on the trip, Jim Morin, a retired professor from Cornell University and and Gretchen Gerrish, a professor at University of Wisconsin at La Crosse introduced us to this amazing creature and magical experience.
March 2, 2016 | SDRStaff
Like other scorpionfish, Rhinopias species are camouflaged to blend in with their surroundings. The scorpionfish’s cryptic camouflage is an invaluable tool for hunting prey and avoiding becoming prey itself. Both prey and predators mistake the well camouflaged fish for a piece of seaweed. These very beautiful scorpionfish are rare, so an encounter by a fortunate diver is a highlight. Their rareness may be due in part to their cryptic behavior, excellent camouflage and the fact some species live in habitats that are not readily explored
February 27, 2016 | SDRStaff
Thresher sharks are one of the most easily distinguishable species of sharks.
Thresher Sharks are best known for their long and whip-like tail that measures even more than its own body. The thresher shark’s tail is so large that it accounts for 33 percent of the shark’s total body weight.
Thresher sharks have big eyes, a small mouth, large pectoral fins, first dorsal fin and pelvic fins. They have a small second dorsal fin (near their tail) and anal fins. Their most noticeable characteristic, as noted above, is that the top lobe of their tail is unusually long and whip-like. This tail may be used to herd and stun small fish, upon which it preys.
February 24, 2016 | SDRStaff
Fluo night diving is diving with a blue light torch and mask barrier filter for viewing bio-fluorescence. This is the property of some marine life to emit light of a longer wavelength (of visible light) when illuminated with shorter wavelength blue light. Not all marine creatures exhibit this effect but in those that do, the sight can be stunning.
February 13, 2016 | SDRStaff
A school of humphead parrotfish descend on the coral reef to feed and turn the age old coral into a fine sand that, in turn, forms islands. Finding yourself engulfed by a large school of humphead parrotfish as they nonchalantly munch their way through acres of coral reef, is an experience not easily forgotten.
Guess what humphead parrotfish use that giant hump head for?
Until recently no one ever knew what the large bony head was for. Recently videos and observations have shown, like large horned and humpheaded four legged beasts, the male humphead parrotfish use their bony head plate to ram each other in territorial disputes. The large male green humphead parrotfish ram each other in an explosive display of power that makes a loud cracking sound underwater.
February 5, 2016 | SDRStaff