Pi observes the underside of his raft and finds algae, shrimp, and crabs living on it. He eats some of these, but only the crabs taste good. Barnacles grow on the lifeboat, and Pi sucks the fluid out of them on occasion. These small diverse creatures offer another distraction from his predicament.
Pi’s desperate hunger becomes the norm, and he will eat anything and everything without qualms. Any kind of distraction also becomes entertainment for him.