MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY MATTHEW OLDFIELD / SCIENCE PHOTO LIBRARY
Young undulate moray eel (Gymnothorax undulatus) being cleaned by a rock shrimp (Urocaridella sp.). A number of reef inhabitants have developed symbiotic relationships as this is the only way in which larger animals can maintain healthy skin. Both cleaner animals and their hosts have developed recognisable markings and behaviours which signal their intentions and allow both predators and prey to coexist. Photographed at Manokwari harbour, West Papua in Indonesia, Asia.
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