im sure that i got told that if i were in the sea and a shark swum towards me 2 punch it on the nose because it will think that im a dolphin?i got told they havent got good eyesight? is some1 trying to get me eaten by a shark or is this true?
2006-11-11 00:00:26 · 19 answers · asked by Gemma B 1 in Science & Mathematics ➔ Zoology
They aren't blind, but they do have poor eyesight
2006-11-11 00:03:11 · answer #1 · answered by Anonymous · 0⤊ 2⤋
There may be some sharks that live in the deepest parts of the sea that have very poor sight but most have quite good eyesight they also have an extra sense which means they can detect the electrical impulses given off from moving fish and other animals Seals birds etc and also have a very good sense of smell, being able to detect blood from a long way off
2006-11-11 00:22:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Sharks have very good eyesight. They have other senses for locating prey from a distance, but as the draw closer to the prey they use their eyesight. Just before the moment of impact with the prey they close their eyes over with a protective membrane to prevent injury. If they had poor eyesight they wouldn't have a need to evolve to protect their eyes would they? So it's obviously an important feature.
Punching them on the nose inflicts a lot of pain for them because it's full of sensitive nerve receptors.
2006-11-12 21:47:41 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Sharks have poor eyesight, but they might see/sense the infrared and they can smell blood miles away.
Sight is a bit of a scientific joke because it involves to aspects:
1)Eyes
2)The Brain
Sharks may create a far more complex mental picture of their surroundings than we realize. Their sense of motion (of prey) is thousands of times superior to our own. They can possibly hear a heart beat miles away and assess the health and size and type of the creature.
They probably "see" better in the water than we do, but not with their eyes.
Sharks FIGHT dolphins by the way. The punch in the nose just stuns him.
Sharks don't eat humans. They usually go away after the first taste. If they did eat us our bones would possibly kill them.
You are more likely to die in a car or airplane accident.
ALSO: They do make shark repelent chemicals if you think you need them.
2006-11-11 00:09:10 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Not true. Great Whites have excellent colour vision for instance. Punching an inquisitive shark can supposedly put it off: they have a lot of their sensory apparatus (smell, electrical pick up) in their snout so this would be painful.
In the Caribean, some divers on 'shark experience' tours have found a way to paralyse small sharks by grabbing hold of their snout. For some reason, it make smaller sharks freeze.
2006-11-11 00:04:28 · answer #5 · answered by Well, said Alberto 6 · 1⤊ 0⤋
Shark eyes are similar to yours. The eyeball has a cornea, iris, pupil, lens and retina. Scientists say sharks have lateral eyes, which means they are located on the side of the head. Some species have an eyelid like structure called a nictitating membrane, which protects the eye from being injured by thrashing prey while the shark is feeding.
The size of sharks eyes, and the exact position vary. Deep-water sharks generally have large emerald green eyes, the better to see the luminescence of other animals who also dwell where little sunlight reaches. Shallow-water sharks, living closer to sunlight, tend to have smaller eyes.
2006-11-11 00:05:26 · answer #6 · answered by libby 2 · 0⤊ 1⤋
No. A shark has excellent vision. In fact, its eyes are about ten times more sensitive to light than your eyes. Some experiments show that sharks can see colors, and that they may prefer bright or shiny objects. (Keep this in mind the next time you shop for a swimsuit!)
Most sharks see their prey when it's about 70 to 100 feet away. To protect their eyes from a thrashing victim, some sharks (such as tiger sharks) cover their eyes with a lid, while others (such as white sharks) simply roll their eyes back into the sockets.
2006-11-11 00:04:23 · answer #7 · answered by J 2 · 4⤊ 0⤋
If sharks are blind, then how can they see you to attack you? I've heard that you should punch them on the nose if they swim at you, but I thought this was more to scare them off, rather than trying to persuade them you are a dolphin.
2006-11-11 00:14:58 · answer #8 · answered by Kirsty 7 · 0⤊ 0⤋
Sharks are not blind, i think they see in Black and White.
2006-11-11 00:08:56 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Sharks have excellent vision.
2006-11-11 05:08:43 · answer #10 · answered by CLIVE C 3 · 0⤊ 0⤋
i think ive heard somefing like dat 2. They probably have a bad eye sight, but they make up for it in smell. Even one drop of blood in the water and they can smell it from a really long way a way.
2006-11-11 00:04:38 · answer #11 · answered by lil monkey 2 · 0⤊ 2⤋