The retina of its eye is divided into two areas – one adapted for day vision, the other for low-light and night. To protect itself, the great white shark can roll its eye backward into the socket when threatened. Sharks have a sense that humans can only be in awe of – they can sense an electrical field.
“They have the ability to roll their eye back when they encounter prey, to protect their eyes,” Mikki McComb-Kobza, of the Ocean First Institute, reported Wednesday on Facebook. “You can imagine as an apex predator, eyes are paramount and so if they are attacking seals they want to protect their eyes.”
White sharks bare their teeth and roll their eyes back into their heads when they attack, and it's not to ramp up the fear factor for their prey.
Shark studies have even found that touching a shark's snout can cause it to halt mid-motion and not attack.
Make Eye Contact
Winram recommends keeping eye contact with the shark at all times. “Once we make eye contact, the shark knows we have seen them and therefore taken their advantage away. This generally gives us the advantage and keeps them from slipping into an instinctual mode.”
Sharks are often viewed as one of the ocean's top apex predators, but despite this rather prestigious classification, there's one marine animal that most sharks prefer to avoid crossing paths with entirely: the bottlenose dolphin.
While it is true that fear emits an odor via your sweat, sharks cannot pick up on it. Sure, you've probably believed the lie told in movies or other types of media. But sharks don't have the capacity to smell fear.
Slowly back away
Try not to thrash and splash around as you gradually swim backwards toward shore. “You must try and keep the animal in sight and very slowly and gently try and swim backwards and get into shallow water. Again, you've got to be careful – large sharks can attack in very shallow depths.”
While it may sound like a marine version of cow tipping, shark flipping is actually the (very scientific) process of rotating a shark onto its back, resulting in an almost hypnotic state that renders the shark completely still for almost 15 minutes and can be done on a variety of sharks.
If a shark sees a human splashing in the water, it may try to investigate, leading to an accidental attack. Still, sharks have more to fear from humans than we do of them. Humans hunt sharks for their meat, internal organs, skin, and fins in order to make products such as shark fin soup, lubricants, and leather.
Made of very strong and thick bone, dolphin snouts are biological battering rams. Dolphins will position themselves several yards under a shark and burst upwards jabbing their snout into the soft underbelly of the shark causing serious internal injuries. More than Peas in a Pod.
Some sharks, such as the great white shark, have jaws that are loosely connected to their skulls, so they can push their jaws out to take a bigger bite. A bull shark has 50 rows of teeth.
When the shark is gently turned on their back, it's thought to disorientate them, causing them to enter the state. The shark's muscles relax and their breathing becomes deep and rhythmic. When released the shark snaps out of this state.
Sharks don't communicate their moods through facial expressions, so what we see as a smile is a result of us interpreting how we as humans express happiness. Though some shark species are known to express themselves through what are called agonistic behaviors.
It is prejudice. Sharks do not circle in the water before they attack, it is simply their way of trying to form an image of what they are confronting in the water. According to my own numerous observations this motion is a sign of pure curiosity and not an incentive to circle its prey and feed.
ESDs aim to overwhelm a shark's electro-sensory system. They emit electrical pulses (each one does so in a different way) that are supposed to repel the shark. So far, ESDs have been the most effective type of personal shark repellent.
But simply touching animals or coral can be as damaging in the long run as intentionally killing or catching them. Many animals, including turtles, rays and many species of sharks, can become vulnerable to harmful bacteria through human contact, leaving them susceptible to disease.
PUSH: Is it necessary to have a more forceful response, it is OK to push a shark as long as one does not hit the animal. Pushing is always recommended should a shark approach in a frontal manner.
For those who still fear going in the water, Bangley suggests looking out for the following: Keeping an eye on birds/fish: If you see birds diving or fish jumping, that could be a indicator that a larger predator, perhaps a shark, could be attempting to prey upon a school of fish.
Swimmers want to make sure that they avoid going in the water in the dark as well because that's when sharks are more active. But, if a shark is near you in the water, stay calm and don't flail your arms. Experts say the best thing to do is to swim slowly and keep eye contact with the shark.
It has traditionally been believed that sharks are repelled by the smell of a dead shark; however, modern research has had mixed results. The Pardachirus marmoratus fish (finless sole, Red Sea Moses sole) repels sharks through its secretions.
Sharks are simply not attuned to sniffing out human blood because humans are not part of their diet. Most sharks eat other fish so that is what their senses are designed to recognize. In addition, the amount of blood that could be released into the water by a woman swimming while menstruating is very small.
FACT: Sharks know the difference between fish and human blood and, while they can smell our blood, it is not a scent they associate with food. Scientific experiments have repeatedly shown that sharks have no interest in human blood.