coelenterate
noun [ C ] biology specialized uk/sɪˈlen.tə.reɪt/ us/sɪˈlen.tə.reɪt/
腔肠动物（一种海洋动物，形体简单，有触手，中部为一腔口，如水母、海葵）
a type of sea creature that has a simple body with tentacles and a single opening at the centre, such as a jellyfish or a sea anemone