BT Fischschwarm Nr. 42-21831879
by Stephen Frink - © Corbis. All Rights Reserved. - © Stephen Frink/Science Faction/Corbis
Underwater View of Bigeye Trevally, Indonesia
Original caption: A shoal of Bigeye Trevally (Caranx sexfasciatus) near the wreck of the Liberty, Tulamben, Bali, Indonesia. Fish often school in massive numbers as a defense to ward off larger predators. --- Image by © Stephen Frink/Science Faction/Corbis