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,…

Why Sharks Don’t Go To The Dentist

Shark teeth are covered in fluoride which makes them cavity-resistant. A study published in the Journal of Structural Biology in 2012 discovered that the enamel on sharks teeth is actually made up of a chemical called fluoroapatite. Fluoroapatite is resistant to acid produced by bacteria so this means that shark’s teeth don’t decay. Also, most…

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…

Shark V Lion

Sharktrooth is interested in how people perceive sharks and just how deserved their terrible reputation is. Is it really true that popular opinion is based on how ‘fluffy’ something is? If someone took a walk across sub-Saharan Africa and they saw a lion – would you expect them to demand all lions in the area…

Great White Rescue Attempt

Robin Schnaible – “We got to Whitecrest about an hour later and came upon a huge crowd of people working to save a 10-12′ Great White that had beached itself. The shark was still alive but had suffered some internal injuries. Several beachgoers were pouring buckets of water over him while others dug a holding…

The Scary Truth About Sharks

The scariest truth about sharks is that they are under threat from us and we could lose them from the oceans. Sharks are an ‘apex-predator’ meaning that they are at the top of their food chain and as such, have a vital role in the eco-system. Sharks kill around 10 people per year, whilst people…

You’re Gonna Need A Bigger Boat!

Some scientists have a reputation for being laboratory nerds – but as this video shows – some of them have to be fearless explorers when it comes to getting close to some of the planet’s most dangerous animals. People like Jeff Kurr and Andy Casagrande prove that when it comes to studying a formidable creature…

Alaskan Killer Shark – Nature Documentary

One of the most interesting shark documentaries Sharktrooth has seen in a long time. This is a documentary about the Salmon Shark – a very close relative to the Great White, who specialises in colder waters of the Northern Pacific Ocean.

Great White Shark Saved

Fishermen off South Africa accidentally catch a juvenile (young) Great White shark and land it on the beach. Realising their mistake, they battle to get the shark back into deeper water without anyone getting injured. Luckily, they manage to free the shark and it swims off to safety, but they could have been in trouble…