Deep Sea Skates – New Species Discovered!

According to a scientific paper published on 13th July 2016 – a new species of deep-water legskate was recently described by scientists Weigmann and Stehmann. When scientists discover a new type of animal it is called ‘describing’ because they have to put together a description of the animal that allows other scientists to be able…

ScienceTrooth – An Interview With A Shark Scientist

In the first of what we hope will be a regular feature, we have given 10 questions to a real, live scientist with shark experience to discover what it is really like working with these animals. Sharktrooth is delighted that our first candidate is Mariah Pfleger, from Oceana. Oceana is a global organisation that is…

SharkWeek Activity – Sex A Shark

This shark week – why not try identifying which sharks on screen are boys and girls? Male sharks have two finger-like parts underneath their body called ‘claspers’. Females instead have an opening called a ‘cloaca’. When you watch shark week do you see more males or females? The best time to see this is looking…

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…

New GuitarFish Discovered?

Scientists Peter R. Last, Bernard Séret and Gavin J.P. Naylor are proposing a revised classification of the guitarfish based on materials collected from the South China Seas. Taxonomy and classification is how we understand different animals that are closely related and taxonomy is the science of defining groups of biological organisms (animals) on the basis…

2016 The Year Of The Shark

There are lots of ways you can take action to make 2016 The Year Of The Shark. Let’s make a stand and start fighting for the sharks and our oceans this year, or next year may be too late… Visit our Friends page to see the different shark and marine conservation organisations you can get…

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…

Elephant Shark Helps Humans

Scientists looking into how shark skeletons develop, have come across an interesting discovery. They believe that studying the spines of a group of animals called chondrichthyans, which are fish with cartilage instead of bone, could help in understanding human skeletal heterotopic disorders. Zerina Johanson, Catherine Boisvert, Anton Maksimenko, Peter Currie, Kate Trinajstic are the scientists…

2015 NOAA Survey – With Added Heroes!

The longest running coastal shark research survey along the East Coast has completed its 2015 field work, capturing and tagging more than 2,800 sharks, the most in the NOAA survey’s 29-year history. The results are very good news for shark populations. Another memorable tale from the 2015 survey In addition to the record number of…

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…

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…