Dugong
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The dugong is a marine mammal. It is one of four living species of the order Sirenia, which also includes three species of manatees. It is the only living representative of the once-diverse family Dug
Dugong
Dugong skeleton displayed at Philippine National Museum
Bones in the forelimb can fuse variously with age.
Dugong tail fluke
Steller's sea cow
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Steller's sea cow is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range
Dugong
…which also includes three species of manatees. It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century. The dugong is the only sirenian in its range, which spans the waters of some 40…
Hydrodamalis gigas skeleton Finnish Museum of Natural History DSC04529
The skull of a Steller's sea cow, Natural History Museum of London
Model in the Natural History Museum, London
Metacarpal bone of H. cf. gigas from Japan under study