Blindsight (Universal Monster Rule)

This ability is similar to blindsense, but is far more effective. Using nonvisual senses, such as sensitivity to vibrations, keen smell, sensitivity to air currents, or echolocation, a creature with blindsight maneuvers and fights as well as a sighted creature. Invisibility, darkness, and most kinds of concealment are irrelevant, though the creature must have line of effect to a creature or object to discern that creature or object. Unless otherwise noted, blindsight has a range of 60 feet.