sirenian

1. Any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs (synset 102075902)
   is a type of: aquatic mammal - whales and dolphins; manatees and dugongs; walruses; seals
   subtypes:

   • manatee, trichechus manatus - sirenian mammal of tropical coastal waters of America; the flat tail is rounded
   • dugong, dugong dugon - sirenian tusked mammal found from eastern Africa to Australia; the flat tail is bilobate
   • hydrodamalis gigas, steller's sea cow - extinct large sirenian mammal formerly found near the Asiatic coast of the Bering Sea
   belongs to: order sirenia, sirenia - an animal order including: manatees; dugongs; Steller's sea cow
   same as: sea cow, sirenian mammal

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