Mediterranean Most Dangerous Place For Elasmobranchs

There is no sign of improvement in the status of Mediterranean chondrichthyans (sharks, rays and chimaeras) more than a decade since they were first assessed by the International Union for the Conservation of Nature. There were no genuine improvements in status for the 73 species, whereas the status of 11 species worsened by at least … Read more

Can Sharks Predict The Weather?

We have all heard stories of animals fleeing an area before a big storm of earthquake hits. This is because mobile species have the choice to move with changing environmental conditions to an area that is more suitable. Usually, these animals are land-based, but would ocean-dwelling species like sharks do the same thing? Now with … Read more

Sharks and Ray Tagging

Many research projects are focused on tracking sharks and rays. The objective of is research is data collection about habitat and migration patterns to support conservation of species, by f.i. restricting allowable catches, protect the habitat itself by restricting access of construction and development. Restricting fishing quota for adult individuals is not sufficient: the protection … Read more

First Ever Recorded Parthogeesis in a Ray

Parthenogenesis, from the Greek meaning “virgin birth” is an odd quirk of embryonic development that allows female animals of some species to give rise to offspring without a male genetic contribution – usually by a doubling of the egg genome to generate a new embryo with the proper number of chromosomes. Parthenogenesis has also been … Read more

Manta Rays Deep Deeper Deepest

Recently, we saw a video of a manta ray, that had dived to a depth of 560 ft. A spectacular sight, this eerie white creature in the dark, deep water, accompanied by a school of tiny fishes. But how deep can a manta ray dive? Research has shown that manta rays do not swim, but … Read more

Do You Have a Shark on Your Face?

We all know how the shark finning industry is killing millions of sharks each year and that’s why we should not eat shark fin soup. We also know that a lot of shark species are being sold as fish and we should be careful about eating them because of the high levels of (toxic) mercury). … Read more

The Greenland Shark Worlds Oldest?

Very limited research has shown that the Greenland shark grows by about 0.5 to 1 cm per year. A shark that was captured and tagged off Greenland in 1936 was recaptured in 1952. In 16 years, the shark’s length had only increased by 6 centimeters. Assuming its growth rate is constant (no growth spurts), one … Read more

Ever Saw a Sawshark?

The sawsharks (Pristiophoriformes) are an order of sharks with long snouts, lined with teeth, used to slash and disable their prey, that is found in sandy bottoms, with the help of their electro-receptors (ampullae of Lorenzini) on the underside of the saw and then taken into the small mouth. Most sawshark occur in waters from … Read more

Say No To Shark Fin Soup Alternatives For Your Big Day

There could be a reason, that you plan to serve shark fin soup on your wedding day: maybe it’s tradition, maybe pressure from your family. But there is a different option: faux shark fin soup. Or why not make your own special blend of your favourite ‘lucky’ ingredients when celebrating your marriage or the new … Read more

New Research Paper Fiji Shark Feeding

Mike Neumann of Beqa Divers, that organizes the Fiji Shark Dive often describes his ventures as a conservation project masquerading as a dive shop. His ultimate goal: protection the sharks of Fiji. Started in 2003, the Fiji Shark Project resulted in the establishment of Shark Reef Marine Reserve, Fiji’s first MPA dedicated to researching and … Read more