Gulper

This creature can produce a strange ululating cry which seems to be a true vocalization rather than the sonar calls to which Darwin IV is accustomed. Lying still amidst the leaves and detritus of the surrounding plaque-barks in the more shaded and dimmer parts of the forests is this large, bloated organism. It is about three meters high and 15 long, the bulk of its length composed of a thick, intestine-shaped tail that lays curled on the ground. Above and behind the creature's distended, yawning mouth, a pair of shrunken winglets beat the still forest air in an almost comical manner. The entire creature is an unlovely shade of yellow-green, translucent in the mouth cavity, where the dappled light touches its wrinkled skin.