In the rainforest of Belize, as evening falls, a predator begins to hunt. The greater bulldog bat is a fisherman. Fish swimming just below the surface of the water create tell-tale ripples which the bat uses to detect the fish below. Flying at 40mph and with absolute precision, the bat takes the fish completely unawares, scooping them from the water with their large back feet. If the shoal scatters, the bats trawl the surface, raking the water by dragging their feet along until they snag a fish close to the surface. Other bats soon arrive at the best fishing spots, and alert each other with warning honks an octave below their usual call, to prevent mid-air collisions.