Shark Deterrent! How Close Is Too Close?

Earlier this month, some scientists published a paper on the effectiveness of electrical field deterrents on Great White Sharks: How Close is too Close? The Effect of a Non-Lethal Electric Shark Deterrent on White Shark Behaviour Ryan M. Kempster, Channing A. Egeberg , Nathan S. Hart, Laura Ryan, Lucille Chapuis, Caroline C. Kerr, Carl Schmidt,…

The Tale of a Tail

From Dr Dirk Schmidt comes an excellent description of how sharks use their tails: “The large upper terminal dorsal lobe provides a combination of slow speed cruise ability cruise and suddenly to burst into a powerful surge when in pursuit of fast prey. Tails are especially modified to handle and enable different uses such as…

Who’s The Daddy?

An academic paper was published last week by scientists S. Corrigan, D. Kacev & J. Werry on one of Sharktrooth’s favourite shark species – the Shortfin Mako (latin name Isurus oxyrinchus). The title of this paper is “A case of genetic polyandry in the shortfin mako”. This article documents a case of genetic polyandry in…

North Carolina Shark Incidents

There is a great article on the Discovery website about this at the moment. You can read the full article here. Rather than join in the general mass media hysteria, Discovery have taken the trouble to get expert opinions on why there have been several incidents with people getting hurt recently. (Sharktrooth would like to…