To facilitate the cleaners, the sharks were seen swimming in a standing position, doing ballet-like twirls so that the fish washers could get at every nook and cranny.

There, hungry and detail-driven cleaner wrasse fish rid sharks of dead skin, external parasites and other undesirables.

Cleaner wrasses, known as the reef's vacuum cleaners, suck morsels of food, parasites, and dead skin from reef fish.