sirenian

Pertaining to or characteristic of a siren.

Pertaining to the Sirenia, or having their characters.

A member of the Sirenia, as a manatee, dugong, or sea-cow.

Any species of Sirenia.

Any of a group of aquatic, herbivorous mammals, of the order Sirenia, including the manatees and dugong.

any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs