The dugong may look like a cross between a walrus and a seal, but it is actually related to the elephant. Dugongs are marine mammals and close relatives of manatees. Dugongs can weigh more than 900 pounds (408 kilograms), and they eat about 66 pounds (33 kilograms) of food a day!
One dugong in this picture (top) is wearing a National Geographic Crittercam. Crittercams include video cameras and other information-gathering devices. They can be attached to animals without hurting them. Crittercams help scientists study the animals that wear them.