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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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Sharkwatch SA Blog

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Daily trip 27 Feb 2012

Monday, February 27, 2012 |  0 Comment Tags: Big Sharks, 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! Bringing the kids next time!” Phil de Graaf.


27/02/2012
Location:
Joubertsdam
Water Temperature: 21.2'C
Depth: 8.3m
Visibility: 1.5m
Number of Sharks: 11
Conditions: Sunny with wind

Hahaha Wow! We had eleven sharks around the boat today and what was even more fantastic was the fact that about 4 of the sharks were in the 4m range! These were some of the biggest sharks that I have seen in a while! It is always great when people see a 2m great white shark for the first time and they cannot believe how big it is! It is even better when they see a 4m shark directly thereafter and they are completely speechless. Our resident sting ray also paid us a visit today and this time he really went for the bait! The guests couldn’t believe that a ray could get that big! The water temperature was eventually the cherry on the cake, at 21.2 ‘C it was almost like a “jacuzzi”! A great day today... 
 

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