Most spiders, despite having eight eyes, can’t see very well, if at all. Much of their hunting is done by detecting surface vibrations which are imperceptible to us, using specialized slit-like organs on their legs. These vibrations are often amplified by a web, which is essentially an extension of their sensory system. The peacock spider is unusual in that it has evolved acute eyesight as well, in order to stalk and pounce on its prey, namely bugs and other spiders.
