While Discovery Channel’s Shark Week is bringing the star power for its 30th anniversary, NatGeo Wild’s counterprogramming, SharkFest, is promising to offer twice the amount of shark-filled entertainment. The sixth annual SharkFest, which premieres on Sunday, July 15, will have two full weeks of shark-related programming. The “other” shark-centric television event has had a tradition of […]
Whale sharks gather at a few specific locations around the world
This article was originally published on The Conversation. Read the original article. By Joshua Copping, University of Salford and Bryce Stewart, University of York The whale shark is the largest fish in the world, but much of its lifecycle remains shrouded in mystery. These gentle giants gather in just a handful of places around the […]
Rising ocean temperatures may alter shark brain development
Even slight increases in ocean temperatures may affect a shark’s brain function and cognitive development, according to a study from the Macquarie University Fish Lab. Researchers found that by raising the temperature of a shark embryo’s environment by 3 degrees Celsius, those that survived had “stronger laterality, suggesting enhanced cognitive abilities.” “Shark brains are very similar to […]
Tracking study reveals peculiar behavior by great white sharks
A new study published by Scientific Reports found that great white sharks in the Atlantic often dive to great depths to hang out in deep-water whirlpools along the ocean floor. The study, conducted by the University of Washington and Woods Hole Oceanographic Institution, examined adult female white sharks in the Gulf Stream and North Atlantic […]
Sharks can learn jazz appreciation
Researchers from the Macquarie University Fish Lab have discovered that some species of sharks are able to take audio cues from music. And that they seem to prefer the smooth tones of jazz. “Sound is really important for aquatic animals, it travels well under water and fish use it to find food, hiding places and […]
Tracking tags provide insight into great white survival rates
Using pop-up archival tag data, a team of researchers found that commercial by-catch of juvenile white sharks is the leading cause of mortality, according to findings published in the Journal of Applied Ecology. Assistant professor at the University of Nebraska and lead author of the study, Dr. John Benson, said that PAT data represented “a widely-available, untapped data […]
Shark DNA discovered through seawater testing
A new method of DNA analysis can help researchers determine populations of ocean creatures, including sharks, by identifying genetic markers found in their environment’s waters, according to research published this week in the journal, Science Advances. The new technology can recover fragments of DNA from shark skin, excretions and blood in the water. Using samples taken […]
Study seeks explanation for basking shark aggregations
Researchers are hoping to understand why large groups of basking sharks, sometimes over 1,000 at a time are aggregating in waters from Nova Scotia to Long Island regularly. In a recent study reported in the Journal of Fish Biology, researchers analyzed aggregations of basking sharks recorded off the northeastern United States coast to learn more about […]
Scientists detail evolution of sharks’ electroreceptive senses
A recent study led by Benedict King And John Long and published in the journal Palaeontology, details how this electroreception may have evolved in placoderm fishes, the evolutionary ancestor of all modern sharks. The sharks’ electroreceptors, also known as ampullae of Lorenzini, are jelly-filled tubes that open on the surface of sharks’ skin. Inside, each tube ends […]
Scientists estimate white shark populations off Australian coast
According to research from CSIRO, approximately 8,000 great white sharks roam the waters off Australia. Using genetic and statistical analysis of DNA extracted from juvenile sharks, the total population estimate included about 2,210 sexually mature adults. Using statistical methods, the researchers were able to estimate how many adults had produced juveniles. Researchers hail the study, […]
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