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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 21 March 2012

Thursday, March 22, 2012 |  2 Comments Tags: Box jellie, 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: “Incredible and humbling to be so close to these incredible animals!” Jenn Vitanzo.


21/03/2012
Location:
Joubertsdam
Water Temperature: 18 'C
Depth: 11.8m
Visibility: 1.5m
Number of Sharks: 10
Conditions: Combination of sun and clouds.

We had an abundance of sharks today and some phenomenal passes by the cage! We weren’t kept waiting at all today, the sharks were very punctual for a change :)! The sharks varied in size today with the largest being 4 meters. We had guests from all over the world and that always makes it interesting to see how different people respond to these animals. We had some screams, laughter and even our “smaller” guests started to fall asleep. We sighted some box jellies in the water today which was an added bonus! A very experience rich trip...
 

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