Spiders have 8 eyes, right?

[yhelothar]

Originally posted by: Eli
I think spiders have 6 eyes. Or maybe it's 4.

And I think that not all spiders have 6 eyes, or however many they have. Could be wrong, but I believe some(most, all?) Salticidae, or Jumping Spiders, have two predominant forward facing eyes, and two off to the side..

pic

Jumping Spiders have the best eyesight of any spider.. they can actually see and stalk their prey from something like 8 feet. :Q

I just saw a jumping spider pounce a small dead moth that's been stuck on my wall for a few months now.

It crept upt to it very slowly, then when it reached about one inch from it, it just jumped at it. You couldn't even see it jump because it was so fast, it looked like it just teleported there.

Then it was all over the moth for about 20 seconds before it found out it was dry, and left.

 

[MAME]

Originally posted by: lirion

Originally posted by: MAME
Thank's lirion.

More specifically: do the extra eyes provide better sight? Are they there because they are often damaged and need backup? Is it because they can't see well with only 2? Etc.

The simple answer is that no one knows. Most spiders don't rely heavily on vision at all. They sense vibrations to know when prey are near, and use chemical cues for courtship and mating.

Jumping spiders and some lynx spiders and a few others actually have very good vision, and these have been studied extensively. But about the rest there just isn't a whole lot known for certain.

Ah, bingo. Doesn't seem all that benificial it seems

 

[SackOfAllTrades]

Some snakes have 2 penises, ain't that a b...

 

[MAME]

Originally posted by: SackOfAllTrades
Some snakes have 2 penises, ain't that a b...

...eautiful thing

 

[SackOfAllTrades]

Originally posted by: MAME

Originally posted by: SackOfAllTrades
Some snakes have 2 penises, ain't that a b...

...eautiful thing

So I take it you appreciate the sight of snake wang

 

[MAME]

Originally posted by: SackOfAllTrades

Originally posted by: MAME

Originally posted by: SackOfAllTrades
Some snakes have 2 penises, ain't that a b...

...eautiful thing

So I take it you appreciate the sight of snake wang

Ewww, dear lord no. I only appreciate both wangs.

 

[Eli]

Originally posted by: virtualgames0

Originally posted by: Eli
I think spiders have 6 eyes. Or maybe it's 4.

And I think that not all spiders have 6 eyes, or however many they have. Could be wrong, but I believe some(most, all?) Salticidae, or Jumping Spiders, have two predominant forward facing eyes, and two off to the side..

pic

Jumping Spiders have the best eyesight of any spider.. they can actually see and stalk their prey from something like 8 feet. :Q

I just saw a jumping spider pounce a small dead moth that's been stuck on my wall for a few months now.

It crept upt to it very slowly, then when it reached about one inch from it, it just jumped at it. You couldn't even see it jump because it was so fast, it looked like it just teleported there.

Then it was all over the moth for about 20 seconds before it found out it was dry, and left.

Haha.. Cool..

 

[BadNewsBears]

Originally posted by: Eli
I think spiders have 6 eyes. Or maybe it's 4.

And I think that not all spiders have 6 eyes, or however many they have. Could be wrong, but I believe some(most, all?) Salticidae, or Jumping Spiders, have two predominant forward facing eyes, and two off to the side..

pic

Jumping Spiders have the best eyesight of any spider.. they can actually see and stalk their prey from something like 8 feet. :Q

Squint hard with one eye, and he looks like the father from orange county choppers, with sunglasses on.

 

[ReiAyanami]

one for each spiderman movie

 

[PremiumG]

maybe the same reason why flies see things.

Flies see things separated by many many "honey comb" shaped cells. THey can see movement much easier by one thing moving between cells. The movement senses lets them fly away before ur hand squashes them

 

[MAME]

Originally posted by: PremiumG
maybe the same reason why flies see things.

Flies see things separated by many many "honey comb" shaped cells. THey can see movement much easier by one thing moving between cells. The movement senses lets them fly away before ur hand squashes them

nope, doesn't seem to be true for spiders

 

[OokiiNeko]

Read an interesting article about flys. Seems their nervous system operates at a higher freq than ours (overclocked?) so in a room with flourescent lights, for them its light, dark, light, dark.
There is also a video on the web of a jumping spider ambushing a bee from the next flower over. Creepy.

 

[aircooled]

Spider eyes