ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Whale shark (Rhincodon typus) with juvenile golden trevally fish (Ganthanodon speciosus). The whale shark is the largest fish in the world, growing up to 18 metres in length. This harmless, solitary animal is found in tropical and warm waters throughout the world, except the Mediterranean. It is a filter feeder, straining plankton and small organisms from the water. It generates its own suction rather than relying on its forward motion and schooling fish may be eaten at times. Juvenile golden trevally fish often swim in front of whale sharks, so that they can be pushed along by the shark's propulsion. Photographed in the Red Sea, Egypt.
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