A new study by the National Institute of Polar Research in Japan found that great white sharks, despite body temperatures that are often warmer than their surroundings, prefer to hunt seals and other prey at slower speeds. These findings, published in this month’s Journal of Experimental Biology, are in contrast to how most endothermic predators hunt. The […]
Drones reveal shark behavior following catch-and-release
A new study used underwater drones to study the immediate effects of catch-and-release fishing activities can have on sharks. Even when a released shark appears healthy during release, it may still be at risk for post-catch mortality. The study, published in the Journal of Experimental Marine Biology and Ecology, determined that a shark’s ability to swim […]
Mapping completed for white shark genome
Scientists from Nova Southeastern University’s Shark Research Center and the Guy Harvey Research Institute successfully decoded and mapped the genome of the great white shark. The joint study, which also included researchers from Cornell University College of Veterinary Medicine, and Monterey Bay Aquarium and published in the latest issue of the journal Proceedings of the National […]
Great whites may have beat out megalodon in battle for survival
According to new research published in the Journal of Life and Environmental Sciences, megalodon sharks likely went extinct at least one million years earlier than previously thought and direct competition with great whites might be to blame. A team of researchers led by vertebrate paleontologist Robert Boessenecker from the College of Charleston-South Carolina, analyzed fossil occurrence of […]
Study: Loss of great white sharks alters entire ecosystems
A new study has documented unexpected consequences following the decline of great white sharks from an area off South Africa. The study found that the disappearance of great whites has led to the emergence of sevengill sharks, a top predator from a different habitat. A living fossil, sevengill sharks closely resemble relatives from the Jurassic […]
Sharks facing even bigger predator in Cape Town
Large, predatory sharks occupy the top of ocean food chains, where they play important roles in maintaining diverse and healthy ecosystems. The loss of these predators can therefore have significant impacts on ecosystems. For a long time broadnose sevengill sharks have occupied the apex of the food chain alongside the more famous great white […]
Human presence slowing Great Barrier Reef’s shark recovery
Much of the Great Barrier Reef is legally protected in an effort to conserve and rebuild the fragile marine environment. Marine reserves are considered the gold standard for conservation, and often shape our perception of what an “undisturbed ecosystem” should look like. However our research, published today in Frontiers in Ecology and the Environment, […]
Whale sharks may eat plants, according to new study
Whale sharks, the world’s largest fish, likely endure periods of starvation and may eat more plants than previously thought, according to the first results of a new health check developed at the University of Tokyo. Ocean scientists now have a powerful, simple tool to discover the diets, migrations, and conservation needs of this endangered species. […]
Gigantic shark species a result of evolutionary adaptation
A news study from Swansea University found that for a species of shark to become giant, it would need to first evolve adaptations that enhance feeding. This includes its ability to control body temperature or become a filter feeder. Swansea University’s Dr. Catalina Pimiento and associates examined the biological traits of all elasmobranchs and ran a […]
Shark Talk: OCEARCH’s Chris Fischer
Last week, satellite tracking data revealed that the waters near the Atlantic continental shelf off the shores of North Carolina, South Carolina, Georgia, and the east coast of Florida are a winter hot spot for large great white sharks. Such a discovery may not have been possible without OCEARCH founder Chris Fischer. OCEARCH, along with […]
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