an herbivorous, aquatic mammal, Dugong dugon, of the Red Sea and Indian Ocean, having a barrel-shaped body, flipperlike forelimbs, no hind limbs, and a triangular tail: widespread but rare.
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Of marine mammals the dugong is peculiar to the Indian Ocean; in the Ganges is found a peculiar species of dolphin.
Again, the Dugong and Manatee are dermally alike, yet extremely different as regards the structure and number of their teeth.
The latter country possesses an organised dugong fishery, which bids fair to exterminate this harmless animal.
When the female Dugong is nursing her offspring the position assumed is almost identical with that of a human mother.
In neither Manatee nor Dugong is there any trace of an acetabulum but one can be made out in Halitherium.