#shark

#shark

See the Inside of a Chewing Shark's MouthThis had to be a scary experience. Self-described film director, pirate, cinematographer, and conservationist zimydakid was scuba diving when a tiger shark decided to take a bite of his Insta360 camera. The shark chewed on it for a minute, then decided it didn't taste all that good, and so discarded it. Surprisingly, the camera still worked fine, with only a couple of scratches as souvenirs of its time in a shark's mouth. Oh yeah, and there's the footage, too. How scared was zimydakid? Judge for yourself from some other footage of him recording tiger sharks.

This Shark Needs a Dentist: Shark Diver Company Photographed a Great White Shark Missing Many of its TeethWe have many ways to keep our teeth from falling out. We can brush our teeth. We can floss. And we can visit the dentist from time to time. But such things are not available for many animals like this great white shark, which was missing many of its teeth at the time this photo was taken. Thankfully, their teeth can grow again naturally.This image was featured on the Instagram account of Shark Diver, an ecotour company ran by a man named Martin Graf."It's pretty unusual for a shark to have that many missing teeth," Graf acknowledged, adding that he did not know at what point or how this shark lost so many of its teeth.Graf added: "Sometimes they lose their teeth when they bite into a big prey, especially if they hit a bone in their prey animal."I sure hope this shark is doing fine in the seas.(Image Credit: Shark_diver_llc via Instagram)#Shark #Teeth #DentalProblems #CageDiving

The Shark Attack Cocktail Looks Like a Shark Hunting in Blood-Filled WaterI don't know how it tastes, but I can immediately understand the visual appeal of the Shark Bite Cocktail. Curacao gives the rum a blue tint, like ocean water. Inside the plastic shark toy is a measure of red grenadine liqueur. When combined, the shark appears to savagely attack its prey, drawn by the taste of blood in the water.-via Super Punch#cocktail #shark #sharkbitecocktail #curacao #bloody

Spiral Shark Intestines Function Like Nikola Tesla ValveIt may be surprising, but scientists actually don’t know much about how a shark’s digestive system works, and how they eat, digest and excrete impact other marine species.In a new study, scientists used computerized tomography or CT scanner to investigate the intestine of a Pacific spiny dogfish shark (Squalus suckleyi). “It’s high time that some modern technology was used to look at these really amazing spiral intestines of sharks,” said professor Samantha Leigh of California State University, Dominguez Hills. “We developed a new method to digitally scan these tissues and now can look at the soft tissues in such great detail without having to slice into them.”The researchers found that the spiral intestine of the shark resembles the one-way valve designed by Nikola Tesla more than a century ago. The so-called ‘Tesla Valve’ allows fluid to flow in one direction without backflow or even moving parts.Leigh suggests that as most sharks usually go days or even weeks between eating large meals, their spiral intestines allow them to hold food in their digestive system and absorb as much nutrients as possible. The slowed movement of food in the intestines allows sharks to retain food there longer, as well as use less energy processing it.Images and video clip: Samantha Leigh/California State University, Dominguez Hills#CTScan #shark #intestines #TeslaValve #NikolaTesla #digestivesystem #marinebiology #anatomy #fluiddynamics

Glass Octopus and Other Strange Marine Creatures Captured on Camera During a Scientific Deep-Sea DiveScientists aboard Schmidt Ocean Institute's research vessel Falkor went on a remotely operated vehicle (ROV) dive in the Phoenix Islands Archipelago in the Pacific Ocean and found this beauty: a glass octopus.The glass octopus or Vitreledonella richardi is a rare species of octopus that gets its name from its ability to being almost completely transparent. The only parts that aren't transparent are its optic nerve, eyeballs and digestive tract. It is one of the least studied octopus, with most specimens known to scientists being found in the stomachs of predators.The yellow dots in the glass octopus' skin between its arms are chromatophores, or pigmented organs that let the octopus change colors for camouflage.via Schmidt Ocean

Realistic Robot Fish Shaped Like an ArowanaBesides displaying just the usual weapons and other military equipment, this year's Beijing Military Expo also had an eerily realistic arowana fish robot that swims and behaves just like the real thing.From OddityCentral:It would swim around normally, and raise its head for a while whenever it reached a wall, then just wing its tail again and swim in another direction. At first glance, its appearance and movements were those of an actual fish, and it was only on close inspection that one realized this was an advanced fish-like robot.#fish #robot #arowana #tail

Earliest Known Shark Attack Victim with 790 Injuries Killed 3,000 Years AgoOxford researchers were investigating a skeletal remains of a prehistoric hunter gatherer at Kyoto University, Japan, when they noticed that the man was riddled with hundreds of traumatic injuries."We were initially flummoxed by what could have caused at least 790 deep, serrated injuries to this man. There were so many injuries and yet he was buried in the community burial ground ... the injuries were mainly confined to the arms, legs, and front of the chest and abdomen," stated researchers J. Alyssa White and Rick Schulting.The researchers ruled out manmade weapons as well as predators and animal scavengers as the cause of the injuries, and concluded that the man died from a shark attack.From Sky News:Since archaeological cases of shark reports are extremely rare, they turned to forensic shark attack cases for clues and worked with expert George Burgess of the Florida Program for Shark Research.The team concluded the man, known as No 24, died between 1370 to 1010 BC.The distribution of wounds strongly suggest the victim was alive at the time of attack; his left hand was sheared off, possibly a defence wound.Image: Laboratory of Physical Anthropology, Kyoto University#shark #skeleton #archaeology #Japan