Status: Not Evaluated
The Pom-Pom Crab uses the anemones as a defense mechanism, waving his claws in the air wildly if a predator approaches so that the sting from the anemone will drive the other creature away. The anemones, on the other hand (no pun intended!), benefit by having the leftovers of any food the crab eats.
However, the bonding with the anemones is not required, and crabs can survive without them (as in aquarium-type situations) or some have been observed using sponges and corals in place of the anemones.