Between 2011 and 2018, researchers were able to identify hundreds of individual adult and subadult white sharks, which are not fully mature but are old enough to prey on marine mammals.
Fossil scales show shark life before humans
The study found that the number of sharks in Caribbean Panama decreased by two-thirds over the last few centuries.
Artificial insemination key to maintaining diversity in captive shark populations
The team found that freshly collected semen was effective in fertilizing eggs in 27.6% of cases; semen that had been cold-stored for 24 or 48 hours had 28.1% and 7.1% success rates, respectively.
Warm-blooded sharks, like white sharks, evolved for greater speed
New research from marine biologists offers answers to a fundamental puzzle that had until now remained unsolved: why are some fish warm-blooded when most are not?
Environmental DNA could provide new insights for tracking whale shark populations
Scientists have developed a new way of tracking whale sharks by collecting eDNA from oceanside areas where we know that whales swim past periodically.
400 million year old fossil casts doubt on previous thoughts on shark teeth evolution
By Benedict King, Max Planck Institute for Evolutionary Anthropology; Martin Rücklin, Naturalis Biodiversity Center, and Philip C J Donoghue, University of Bristol Teeth play a central role in the ecology of most vertebrates – for catching prey, processing food and even attracting a mate. It’s no surprise that scientists such as ourselves have long been […]
Ancient Antarctic sharks store climate secrets in their teeth
The now-extinct sand tiger shark species Striatolamia macrota was once a constant in the waters around the Antarctic Peninsula, and it left exquisitely preserved fossil teeth.
OceanX opens up world of the bluntnose sixgill shark
Although this ancient shark hasn’t changed much since the age of dinosaurs, little is known about the apex predator because it spends most of its time at depths of up to 4,500 feet.
Sharks and cancer: past myths, present realities and future possibilities
Whilst sharks do seem to have some kind of resistance to disease, they are not immune to cancer.
New study discovers how some sharks rest
Introduction Most sharks never stop swimming for their entire lives. Some species have evolutionary traits that allow them to stay in place. However, most sharks require movement to extract oxygen through their gills. For these sharks, stationary resting is impossible. How sharks rest is a large mystery to shark science. Behaviors have been observed, but […]
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