“水螅”用英语怎么说

珊瑚是由某些水螅体构成的.Coral is formed by certain types of polyp.水螅虫类生命循环中的无性生殖水螅虫.The asexual polyp in the life cycle of a hydrozoan.在南极边的威德尔海,一只水螅水母伸展它的冷光触须.A hydromedusa spreads its luminescent tentacles in the Weddell Sea near...