Commensalism
(a) Commensalism is a relationship between two organisms in which one organism (the commensal) benefits from another (the host) without damaging the host.
(b) For example, the remora fish (the commensal) is often found attached under a shark. It feeds on the scraps of food left by the shark without harming the shark.
(c) Another example is the interaction between the clownfish and the sea anemone. The clownfish lives among the poisonous tentacles of the sea anemone. The tentacles do not harm the clownfish and protect the fish from a larger predator.