Which is the best example of Commensalism?

What is a real life example of Commensalism?

One of the best-known examples of a commensal is the remora (family Echineidae) that rides attached to sharks and other fishes. Remoras have evolved on the top of their heads a flat oval sucking disk structure that adheres to the bodies of their hosts.

What is an example of Commensalism in the grasslands?

Another example of commensalism is one organism using another as a means of transportation. A lot of insects, fish, and other animals use each other in this way, but a good example is the remora. This is a type of suckerfish that will attach itself to sharks and other big fish to catch an underwater ride.

What is an example of parasitism in nature?