While some spiders have poor eyesight, no known spider species is completely blind. All spiders have sensory organs called eyes that help them navigate their environment and detect prey.
How Spiders See
- Simple Eyes: Most spiders have eight simple eyes, each with a single lens. These eyes are good at detecting movement and light changes, but they don't provide detailed images.
- Compound Eyes: Some spiders, like jumping spiders, have two large, forward-facing eyes that provide a more focused view of their surroundings.
Spiders That Rely Less on Sight
- Cave-dwelling spiders: These spiders often have reduced eyesight because they live in dark environments where vision isn't as important.
- Web-building spiders: Many web-building spiders rely more on vibrations in their webs to detect prey. They might have less developed vision because they don't need it to hunt.
Even though some spiders might have poor eyesight, they can still navigate and hunt effectively using their other senses, such as touch, vibration, and smell.
