sirenian

From Scientific Latin Sirenia.

• (UK) IPA^(key): /sʌɪˈɹiːnɪən/

sirenian (plural sirenians)

1. (zoology) Any of a group of aquatic, herbivorous mammals, of the order Sirenia, including the manatees and dugong.
   • 2011, Richard Shelton, "Sheep, pig, whale", Times Literary Supplement, 22 Sep 2011:

     The cetaceans (whales and dolphins) together with the sirenians (sea cows and manatees) are the sea mammals best-adapted to the seas of today, but it is the cetaceans that have most engaged the attention of mankind as both prey and fellow sentient being.

• sea cow

• sirenian at OneLook Dictionary Search

• arsinine