Marine worms (Polynoe bevisetosa), a worm with highly developed heads and many bristles arranged along the sides of the body. These are common form along the seashore. The body presents the same segmented apprerance as the earthworm. The head is provided with numerous sense organs, among which are four eyes and several tentacles or feelers. Shown is a common marine worm with extended proboscis and overlapping plated covering the back.