New study: Ancient Arctic sharks tolerated brackish water 50 million years ago
Sharks were a tolerant bunch some 50 million years ago, cruising an Arctic Ocean that contained about the same percentage of freshwater as Louisiana's Lake Ponchatrain does today, says a new study involving ...
Shark teeth analysis provides detailed new look at Arctic climate change
A new study shows that some shark species may be able to cope with the decreasing salinity of Arctic waters that may come with rising temperatures.
Shark tracking reveals impressive feats of navigation
Some shark species are able to navigate to specific locations up to 50km away, a new study published in the British Ecological Society's Journal of Animal Ecology has found. Re-analysing tracking data from t ...
New study shows some sharks follow 'mental map' to navigate seas
A new study led by a University of Florida researcher uses tracking data of three shark species to provide the first evidence some of the fish swim directly to targeted locations.
First shark killed in Australia cull
The first shark caught under a controversial new Australian culling policy aimed at reducing fatal attacks was shot dead Sunday after being snared, angering conservationists.
Imbalance of sharks and sea turtles challenges ecosystems worldwide
(Phys.org) —The loss of sharks could contribute to the destruction of one of the planet's most under-appreciated sources of carbon storage—seagrasses. While sharks are often sensationalized as voracious ...
Top marine biologists urge end to Australia shark cull
Hundreds of the world's top marine scientists have called for Western Australia to ditch its shark cull policy, arguing there is no evidence that it makes beaches safer, a report said Friday.
Tracking the deep sea paths of tiger sharks
Shark research scientist, Dr Jonathan Werry, has undertaken a four year study tracking the migratory patterns of tiger sharks (Galeocerdo cuvier) across the Southwest Pacific.
New study examines the effects of catch-and-release fishing on sharks
A new study led by scientists at the University of Miami (UM) Abess Center for Ecosystem Science and Policy and the Rosenstiel School of Marine and Atmospheric Science investigated how several species of ...
New study reveals vulnerability of sharks as collateral damage in commercial fishing
A new study that examined the survival rates of 12 different shark species when captured as unintentional bycatch in commercial longline fishing operations found large differences in survival rates across ...
Scientists estimate more than 100 million sharks killed annually
(Phys.org) —The number of sharks killed each year in commercial fisheries is estimated at 100 million, with a range between 63 million and 273 million, according to the research "Global Catches, Exploitation ...
Newly discovered tiger shark migration pattern might explain attacks near Hawaii
The migration of mature female tiger sharks during late summer and fall to the main Hawaiian Islands, presumably to give birth, could provide insight into attacks in that area, according to a University of Florida scientist.
Underwater sound and lights show considered to repel sharks
Shark biologists deployed bubbles, chemical repellents, electric fields, lights and underwater sounds off the WA coast last month as part of a study into shark deterrents.
Fear of sharks helps preserve balance in the world's oceans
(Phys.org) —A prey's fear of a shark is critical to protecting ocean biodiversity, according to researchers at Florida International University. Without this fear, a cascading effect within the ecosystem could destabilize ...