ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Slender remora (Echeneis naucrates) attached to the shell of a green turtle (Chelonia mydas). The remora, also named the suckerfish, has a symbiotic relationship with many large sea animals such as turtles. Attached to its host by a sucker (seen underneath eye), it cleans the skin of its host of parasites, and eats left-over scraps. The remora is carried along by the turtle, and the presence of the turtle also helps deter the remora's predators. Photographed near Marsa Alam, Egypt, in the Red Sea.
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