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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 18 May 2017 Trip 1&2

Thursday, May 18, 2017 |  0 Comment Tags: Great white sharks, Marine Dynamics, shark cage diving, Tami Kaschke,

Author: Tami Kaschke (MA, research assistant)

18/05/2017

“Really excellent crew with great information. We will definitely come back and recommend both friends to go diving and to volunteer. Thank you!” – Alex & Liz

“Great day – thank you! Nice volunteers, really enjoyed day.” – Lilly & Charlotte

“Crew were helpful and friendly. Full of interesting facts! Would have liked to have seen more sharks but that can’t be helped. Thank you!” – Daisy & Cara

Location: Joubertsdam 

Water Temperature: 13.6 C + 13.8 C

Depth: 12.3m + 11.1m

Visibility: 0.5 m + 0.5m

Number of Sharks: 4 + 2

Conditions: rolling swell

Our first trip started out with a shark sighting after only 20 minutes.  After an initial flurry of action, the rest of the trip was significantly slower.  We were quite fortunate to see four different sharks.  However, the last two observations were only at the front of the boat and the sharks did not stay around.  A big thank you to our Italian friends who were with us this week!  We were quite happy to yell “squalo” throughout your time with us.  Looking forward to your future visits!

The second trip had to show a little more persistence to get a shark.  We were anchored for well over 2 hours before catching our first glimpse of a shark.  It was the same small juvenile female that we have seen the past couple of days.  Everyone was quite relieved that the wait was finally over.  Towards the end of the trip we had a quick peek at a bigger shark, but sadly that individual did not stick around long enough for everyone to have a proper look.  Thank you to everyone for your patience throughout the day.  We have the best clients in the world!

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