how many eyes does a spider have?

Answer 1

The number of eyes varies from one kind of
spider to another. The most common number is
eight. Other kinds may have 6, 4, 2, 1 or 0 eyes.
After 8, 6 and 0 are the commonest numbers.
Only one has ever been found with a single eye
and it may be an abnormality. There are none
known with more than 8, though certain accidents
may make them appear to have more. It is
possible that some error in development might
make one of them actually have more than 8, but
I have never heard ot such an occurrence.

They do not have facetted eyes like an insect, the
answerer that said they do is mistaken.

Answer 2

The eyes are located in the front. Most spiders have eight eyes, some 6. But there are spiders with no eyes, 2, 4 and up to even 12 eyes. The eyes are singular and are called ocelli, unlike the insects that have compound eyes. The main pair of eyes is always the middle pair and has a different construction than the other eyes. The light sensitive cells point towards the incoming light and is therefore referred to as indirect retina. Except the crab spiders and jumping spiders, the main eyes are small or even absent in spiders with six eyes. The construction is similar to as in humans and these eyes have a high resolution. In the other eyes the light sensitive points away from the light and have an indirect retina. These secondary eyes give the spider a much broader field of vision than the main eyes and are used to give them the ability to judge distance. During hunting, these secondary eyes catch the movement of the prey and the main eyes are used to focus as it moves closer to the prey.

Answer 3

"A spider's eyes are located on the cephalothorax. Most spiders have 6 or 8 eyes. Spider eyes are considered "simple": they do not have multiple lenses and facets as do the compound eyes found on some insects. Although some spiders can only see the difference between light and shadow, others, especially Jumping Spiders, are believed to have excellent eyesight"
-web site.

Answer 4

"A spider's eyes are located on the cephalothorax. Most spiders have 6 or 8 eyes. Spider eyes are considered "simple": they do not have multiple lenses and facets as do the compound eyes found on some insects. Although some spiders can only see the difference between light and shadow, others, especially Jumping Spiders, are believed to have excellent eyesight."

Answer 5

"Spiders usually have eight eyes in various arrangements, a fact which is used to aid in taxonomically classifying different species. Sometimes one pair of eyes is better developed than the rest, or there are only three pairs, or even no eyes at all. Several families of hunting spiders, such as wolf spiders and jumping spiders, have developed good to excellent vision. The main pair of eyes in jumping spiders even sees in colors. However, most spiders that lurk on flowers, webs and other fixed locations waiting for prey tend to have very poor eyesight, but possess an extreme sensitivity to vibrations, which aids in prey capture. Vibration sensitive spiders are picking up vibrations from such various mediums as the water surface, the soil or their silk threads. Also changes in the air pressure can be detected in the search for prey."

Answer 6

I have seen many dead spiders. They had only two eyes. A live spider is too alert to allow close observation and its quick movements must be giving that he has a thousand eyes like the mythical Indian god Indra.

Answer 7

The number of eyes on a spider varies from species to species, most begin at six but can be more or less.

Answer 8

The way I remember, a spider has eight eyes.

Answer 9

6 or more

Answer 10

most spiders have eight eyes