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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 Blog 19 May 2017 Trip 1 & 2

Friday, May 19, 2017 |  0 Comment Tags: Great White Shark, Marine Dynamics, shark cage diving,

Author: Tami Kaschke (MA, research assistant)

19/05/2017

“Fantastic, would come back to Cape Town just to do this again.” – Wendy & Lorne

“Great experience – the lack of sharks only means we’ll have to come again!  Otherwise, the guides are awesome.” – Ryan & Rebecca

“Wonderful! Unforgettable! Amazing hostess/host/guide with energy & knowledge.” – Kristin & Joe

Location: Joubertsdam 

Water Temperature: 12.7 C + 13.0 C

Depth: 12.5m + 7.7m

Visibility: 1.5 m + 1.0m

Number of Sharks: 2 + 1

Conditions: beautiful day

It was a perfect morning in Kleinbaai Harbour.  Although there was a bit of a chill in the air, the sun started to warm everything up quite quickly.  We moved anchor positions on our first trip and that brought us our first shark.  It was a shark we saw a couple of days ago.  It has an injury that first looked like a bite mark, but looking at the pictures it seems to be a cut in the shape of a half moon.  The juvenile male from yesterday also decided to come have a look at Slashfin.  It was a welcome surprise to see him 3 days in a row. 

The 2.6 m male from the morning trip once again showed up to say hello.  However, he must have had other plans because he did not stay around for long.  Unfortunately, that was our only shark sighting for the trip.  We were visited by a very large short-tailed stingray.  At times it must have thought it was a shark as it came up on both the bait and decoy. 

Today showed once again that the number of sharks in our bay has not fully recovered.  We will be keeping our fingers crossed as we go forward.

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