Most spiders have eight eyes. Some have no eyes and others have as many as 12 eyes. Most can detect only between light and dark, while others have well-developed vision. Experiments have demonstrated that some spiders can recognize and respond to specific shapes on television monitors. However they’re equipped to see, all spiders have highly evolved systems to detect prey and danger.
Some spiders can’t see at all. Most spiders don’t see very well. Many have eyes that only help them distinguish between light and dark. Only a few species can see well in enough detail to be able to hunt prey effectively.
Those facts may surprise some people. Why? Because spiders have so many eyes! Most spiders have eight eyes. Some species have six or fewer eyes, but they always come in an even number.
Some species of spiders, such as those that live in caves or under the soil, have no eyes at all. Even those species with eight eyes don’t usually see very well. For example, most spiders that spin webs have poor eyesight and rely upon their senses of touch and smell to navigate their webs and find prey.
Credit : Wonderopolis
Picture Credit : Google
