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  • In Gansbaai, the largest white shark ever caught was at Danger Point and measured up to 5.9m. The exact world record white shark is a contested issue, but chances are it is between 6-7m.

  • If you see a white shark in the water don’t panic. Chances are high that the shark has already detected you and isn’t interested. White shark attacks are normally associated with poor visibility, so avoid murky conditions.

  • White sharks have a unique system called a “counter current heat exchange”, which keeps their body  tempreture +/- 7C above the surrounding water temperature. 

  • All sharks have an incredibly unique system on the tip of their nose called the “ampillae of Lorenzini”. These are small pores filled with a gel that transmits the electrical currents in the water to the shark’s brain so that it can assess its environment.

  • White sharks give birth to live young (not eggs), and they give birth to 6-8 pups at one time. Pups are usually between 1.0-1.5m in length and are born with teeth.

  • Body language has been a well documented form of shark communication and has identified body arching, jaw gaping, and other postures as specific social tactics.

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Daily trip 13 March 2012

Tuesday, March 13, 2012 |  0 Comment Tags: Cape Cormorants, shark cage diving,

Author: Nicola Stelluto (Environmental Ecologist)
My initial love for the environment occurred at a young age when my father and I use to watch animal documentaries on Sunday evenings. I was hooked on anything ocean related when I saw these amazing submersibles going to such extreme depth in the ocean and discovering previously unseen things. To be the first to go somewhere where no one has been before was the first thing that attracted me to the field of natural sciences.

Guest comment: “Fantastic day, great job guys! Four sharks and one very lazy shark! Happy days.” Howard Brunton.


13/03/2012
Location:
Joubertsdam
Water Temperature: 15.4'C
Depth: 8.5m
Visibility: 2m
Number of Sharks: 4
Conditions: Foggy conditions.

We had a couple of amazing sharks that were putting on a marvellous show! I was however very disappointed to see that our first shark of the day had two large hooks stuck in the corner of its mouth. I wish we could have helped that poor shark on the spot, however we would have done more harm than good. Our boat is not properly equipped for such things, unfortunately we could only inform our conservation agencies. This large 3.5 meter female remained with our boat for the entire duration of the trip and she was great to watch. She was definitely not camera shy :)! An old friend came to say hello; “Rosy” has been scarce for quite some time and she was lively as ever. We were also very fortunate to see a large flock of Cape Cormorants making their way towards Dyer Island, most likely to rest after a long day of fishing! It’s easy to understand why they are the most abundant sea bird species off our coast if you just view the photos! Great trip...
 

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