dugong sea cow
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- เผยแพร่เมื่อ 1 พ.ค. 2022
- Dugong sea cow
Dugongs occur in tropical and subtropical around the world.
Dugongs are grey mammals which spend their entire lives in the sea. Fully grown, they may be three metres long and weigh 400 kilograms. Dugongs swim by moving their broad whale-like tail in an up and down motion, and by use of their two flippers. They come to the surface to breathe through nostrils near the top of their snouts. Dugongs' only hairs are the bristles near the mouth.
Dugongs undertake long-distance movements, which means Australia shares populations with other neighbouring countries. In Australia, dugongs occur in the shallow coastal waters of northern Australia from the Queensland/New South Wales border in the east to Shark Bay on the Western Australian coast. They are also found other parts of the Indian and Pacific Oceans in warm shallow seas in areas where seagrass is found.
Dugongs graze on underwater grasses day and night, rooting for them with their bristled, sensitive snouts and chomping them with their rough lips.
Female dugongs have one calf after a yearlong pregnancy, and the mother helps her young reach the surface and take its first breath. A young dugong remains close , sometimes catching a ride on her broad back.
These languid animals make an easy target for coastal hunters, and they were long sought for their meat, oil, skin, bones, and teeth. Dugongs are now legally protected throughout their range, but their populations are still in a tenuous state.
Some believe that dugongs were the inspiration for ancient seafaring tales of mermaids and sirens.
Dugongs Dugong dugon are peaceful and tranquil animals. They appear fat, but are in fact (being they have a wide middle and taper at either end). They are hydrodynamic, and highly muscular, reaching up to 3 meters in length and weighing up to 500 kg. They are exclusively bottom feeders, primarily feeding on sea-grass and aquatic vegetation which they uproot by digging furrows in the seafloor with their snouts. The species' preferred habitats include warm and shallow coastal waters, with healthy ecosystems that support large amounts of vegetation.
dugong sea cow
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