Anatomy: Dugongs range in size from about 8 to 10 feet (2.4-3 m) long and weigh from 510 to 1,100 pounds (230-500 kg). They have a streamlined body and a flat, two-pointed tail.

Diet: Dugongs are herbivores (plant-eaters) who eat sea grasses that grow on the sea bed. They rest during the day and spend most of the night eating. Dugongs have one pair of tusk-like teeth.