Sharks travel without passportsGansbaai white sharks have been documented in Mozambique, near Marion Island, Madagascar, even Western Australia! Because the shark’s eyes are on opposite sides of its head (in most species), the shark is able to see for almost 360-degrees. Sharks do not have bonesSharks and rays belong to the class of fish with skeletons composed of cartilage, not bone. If this movement stops, they suffocate. Vestigiality. Compared to a human brain, the brain of a Great White Shark is relatively small. Sharks that are more active at night (nocturnal) have better developed tapetum lucidum tissue. Sharks communicate with body languageGreat White Sharks do not produce noises. However, many female white sharks are seen with bite wounds along the gill areas (above!) To learn more about the world of sharks, explore the links below. Or have a protective film that covers their eyes like an eyelid. Most sharks have a nictating membrane. Rods allow them to distinguish between light and dark and there are generally far more of these cells than cones. Sharks can heal themselvesGreat White Sharks can heal their wounds & have an incredibly strong tolerance to injury and illness.A severe case was a white shark dubbed ‘Prop' in Gansbaai who was nearly split in half by a boat propeller. Because there is nothing to hang onto, when the male shark senses a female is ovulating they approach, and if she can’t fight them off they will bite her (usually her fins) and dig in. It serves as a basic shield from injury. They can sense a drop of blood in millions of drops, they grow up to 22,000 teeth in their lifetime, their eyes roll back into their head when they attack so they don’t have vulnerable areas and we do research on their cartilage because they so rarely get cancer. Sometimes sharks even leap out of the water in pursuit. This involves rolling its eyes back in its head during attacks, making the eyes appear white and eerie. ELECTRO-RECEPTION Sharks have a sense that humans can only be … It’s tempting to see pictures and conclude that the great white is having a moment of orgasmic satisfaction, at the prospect of a blood-fuelled killing orgy. Maintenance / Marketing / Web Development and design by Jaydee Media. White sharks must swim to breathe. Sharks are simply defending their own territory. Also unlike humans, shark eyelids serve to protect the eye when attacking prey. read more. Great White Sharks are the world's largest predatory fish, reaching up to 6 meters in length. *All information supplied by marine biologists. Shark or human- who has the bigger brain? Great White Sharks have never been filmed mating. 8 Swart Street, Kleinbaai, Gansbaai, South Africa<. Many sharks have eyes on the sides of their heads that don't allow for stereo vision. This is most necessary during hunting and attack, when prey and other sharks are thrusting, thrashing and biting around the head and delicate eye area. In the majority of recorded attacks, the shark bites the victim, hangs on for a few seconds (possibly dragging the victim through the water or under the surface), and then lets go. Cone cells allow animals and people to see colour. Most sharks actually do this, not just white sharks. As in humans, sharks have both cones and rods in the cellular structure of their eyes. ELECTRO-RECEPTION Sharks have a sense that humans can only be in awe of – they can sense an electrical field. When a Great White bites into prey, its eyes roll tailward in their sockets to protect them from physical damage. Where do sharks give birth?NO ONE knows because Great White Sharks have never been observed giving birth. Because there is nothing to hang onto, when the male shark senses a female is ovulating they approach, and if she can’t fight them off they will bite her (usually her fins) and dig in. In these cases, the eyesight is clearly negotiated during such violent encounters. How deep can a great white shark dive?The deepest recorded great white dive was in New Zealand and was over 1200m, giving new meaning to the term "Down Under". When you dream, your eyes flutter quickly from side to side, which is exactly why this phase is known as rapid eye movement (REM) sleep. But Great White Sharks do not have a nictating membrane so when they hunt their eyes roll backwards into … Source: qa.answers.com. However, it is capable of processing complex information about its’ surroundings. The iris of a white shark is not black, it’s a very dark blue. Did you Know? Such an adaptation enables sharks to see even in low light and dark murky water up to 10 times greater than humans. White sharks and tuna have heat-generating muscles. Advertisement Often they rush up to their prey, inflict a potentially fatal bite, then back away while the animal dies. The deepest recorded great white dive was in New Zealand and was over 1200m, giving new meaning to the term "Down Under". Do sharks' eyes roll into the back of their heads when they attack? Some Sharks have three eyelids, an upper and lower one just like us. lt's called the nicitating membrane