Sirenia :: Sirenia (n. pl.) An order of large aquatic herbivorous mammals, including the manatee, dugong, rytina, and several fossil genera..
Sirenical :: Sirenical (a.) Like, or appropriate to, a siren; fascinating; deceptive..
Sirenize :: Sirenize (v. i.) To use the enticements of a siren; to act as a siren; to fascinate.