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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 23 March 2012

Friday, March 23, 2012 |  0 Comment Tags: shark cage diving, Subarctic skua,

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: “Awesome day! Had so much fun and really got a different view on the sharks now. Thanks!” Mariane Holen.
 
 
23/03/2012
Location:
Joubertsdam
Water Temperature: 17.4 'C
Depth: 11.6m
Visibility: 2.0m
Number of Sharks: 8
Conditions: Wet and awesome!
 
Wow! We had a truly amazing time at sea today. The day started off on a wet note with heaps of rain, fortunately for us we were on a well equipped vessel. We simply released the side tarps and that protected us from all the rain, being the largest shark diving boat in South Africa has its perks! The rainbow was a good sign for us; the shark activity was very high with very close passes by the cage! The visibility in the water was amazing for most of the trip allowing for marvellous viewing, the rain offers some advantages. The sharks were passing time and time again and were all in the size range of about 3.5 meters. After the rain had moved on we were greeted by beautiful flat seas! It was an adventure packed day...
 


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