A cleaner shrimp (Lysmata amboinensis), inspects the teeth of an undulated moray eel, Hawaii, United States of America, Pacific, North America

Inspecting horse's teeth, England, United Kingdom, Europe

Indian Hindu pilgrims bathing and cleaning teeth in The Ganges River at Dashashwamedh Ghat in Holy City of Varanasi, Benares, India

Indian Hindu man bathing and cleaning his teeth in the River Ganges by Kshameshwar Ghat in holy city of Varanasi, India

Indian Hindu pilgrims bathing in The Ganges River at Dashashwamedh Ghat in Holy City of Varanasi, Benares, India

Men bathing at Dharbanga Ghat by the Ganges River in City of Varanasi, Benares, Northern India

Cleaner shrimp works on moray eel.

A man brushing his teeth

Lizardfish (Synodus variagatus). Indo Pacific

outdoor bathroom in a courtyard of a new Kung Fu school, washing hair, face, cleaning teeth, near Shaolin, Song Shan, Henan province, China, Asia

Young male camper brushing his teeth, Freilassing, Bavaria, Germany

Symbiotic behaviour Symbiosis of jewel perch vermillion seabass (Cephalopholis miniata) lies at cleaning stationwith mouth wide open showing teeth rows of teeth motionless in coral reef lets cleaner wrasse bluestreak cleaner wrasse (Labroides dimidiatus) rid itself of parasites, Indian Ocean, Mascarene Islands, Mauritius, Africa