Jul '18
The diversity of sharks is just amazing
White sharks (Carcharodon carcharias) are migratory, apex predators, which have undergone significant population declines. We have to understand the shark ecology to ensure our management strategies are effective.
BELLY BUTTONS
Jun '18
Winter white shark season in Gansbaai
Gansbaai in South Africa is the only place in the world where you can safely go cage diving with Great White Sharks all year round. And believe it or not, the winter season is the best time to do this bucket list adventure.
Jan '18
White Shark Café – Are sharks eating or meeting down under?
Great white sharks congregate every spring in a deep area of the Pacific Ocean known as the white shark Café. Scientists are not sure what the sharks are doing while at the Café but because animals undertake extensive migrations for a number of reasons including escape, dispersal, foraging and reproduction, they cited this as a potential mating area. When the females arrive at the Café only briefly, the males were already patrolling the area in an increased rate of vertical movement.
Jan '18
Great White Shark's bark is more powerful than its bite
The shark's ability to inflict killer damage on anything it grabs, however, probably is due to saw-like teeth and not the amount of bite force, the study researchers say. Once a great white clamps down on a prey with its razor-sharp teeth, the shark often shakes the catch from side to side to initiate a sawing action. The jaws work like a set of pliers, where pliers with long handles would let you grab an item with more force than pliers with short handles.
Jan '18
Sharks don't see red -in fact they might be color blind.
What’s the view like through the eyes of a shark? That’s what some shark researchers in Australia wanted to know. They used an instrument called a microspectrophotometer to measure light-sensitive cells in the eyes of several shark species.
"Humans have three cone types that are sensitive to blue, green and red light, respectively, and by comparing signals from the different cone types we get the sensation of colour vision," according to Professor Hart, of the University of Western Australia who led the study.
"However, we found that sharks have only a single cone type and by conventional reckoning, this means that they don't have colour vision. It does not necessarily mean that sharks see in black and white, but they’re certainly color-blind.
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Contact Details
No. 8 Swart Street, Kleinbaai, Gansbaai, South Africa
GPS: 34° 36'52"S - 19º 21'18"E
Phone: +27 (0) 28 384 1418
Mobile: +27 (0) 83 300 2138
E-Mail: brian@sharkcagediving.net
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