1 Breeding may occur throughout the year, although many births occur between July and September. Young animals hitch rides on their mothers backs, surfacing and sumbmerging in enforced unison. Although the drinking of milk may continue for a year and a half, young dugongs begin sampling sea grasses at about three months of age. Females generally give birth once every 3-7 years. . At 9-15 years of age.
Habits Feeding occurs primarily at nioght, when animals enter shallow waters to graze.
The tail flukes provide most of the locomotory power, with the front flippers being used for steering. Aggressive behaviour is very rare, although many adult males bear scars from the tusks of rival males. Vocalizations, including whistling sounds and bleats, are generally only used when frightened, and are thought to be used only for short-range communication. Population densities may vary from 0.1 to over 12 animals per kilometer of coastline. . Large herds with over 100 animals are infrequently encountered.