The sea worm above secretes water-proof pigments from pores in its tail. It uses its tail to paint copies of anything that crawls by. Mostly, these are others of its kind that live in the same colony. This seafloor mural allows these creatures to hide against this background by holding still. Predators learn quickly that most of the worms they see are only pictures and give up if they do not see movement. This is important, as the predator shown below is very fast. With five jets, it can change direction very quickly. The slit on the left is the mouth.
Hello, my name is Dan. I am an author, artist, explorer, and contemplator of subjects large and small. I like bacon. I like pizza. I like bacon pizza. I enjoy long walks on the beach, but prefer the mountains. I am a huge fan of Jesus. When I grow up, I want to be just like him and create my own universes.