ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Dugong (Dugong dugong) with a shoal of juvenile golden trevally (Gnathanodon speciosus) swimming in front of it. The dugong is a herbivorous marine mammal found in shallow, tropical waters throughout the Indo-Pacific region. It can grow to three metres in length and 400 kilograms in weight. Early seafarers believed dugongs to be mermaids. Juvenile golden trevally swim in front of harmless sea animals, in order to be pushed along by the animal's propulsion. Photographed in the Red Sea, Egypt.
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