open
<
1/6
  • 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.

>

Sharkwatch SA Blog

Book Now

What is a white shark's sense?

Wednesday, May 16, 2012 |  0 Comment Tags: electric sense, sixth sense,

Author: Michelle Wcisel (Marine Biologist)
To Michelle, a born and bred American from Michigan, the sea resembles another planet within Earth where intelligent "extraterrestrial" beings and thriving systems flourish in the depths where there is neither oxygen nor sunlight. "So many of us gaze at the stars in wonder when we should be looking into our oceans!"

So what sense can sharks detect that allows them to feel a heart beat? No it's not the Enrique Iglesias effect, white sharks are able to detect electrical currents in the water. All animals produce electrical currents, heart beats, tapping your finger, any movement produces a weak electrical current.Sharks have an incredibly unique system on the tip of their nose, or rostrum, called the ampillae of Lorenzini which are small pores filled with a gel that take the electrical currents in the water to the shark's brain for it to assess what the current is coming from. They also have a lateral line system allowing the sharks to feel changes in pressure and movement all along their body. Check out this close up picture of a white shark's rostrum. See the little 'ampilliae'?



Do you have a shark fact you are dying to know the answer to? If you have a white shark question that hasn't been featured yet on the blog, email us by clicking here!

comments powered by Disqus