noun🔗ShareSirenioAny of a group of aquatic, herbivorous mammals, of the order Sirenia, including the manatees and dugong."The marine biologist showed the students pictures of a manatee and a dugong, explaining that both are types of sirenian. "El biólogo marino mostró a los estudiantes fotos de un manatí y un dugongo, explicando que ambos son tipos de sirenios.animalbiologyorganismenvironmentoceannatureChat with AIVocabulary GamePractice Reading