Planulae

Fertilization is external, producing free-living planula larva.

外受，能产生由活动的浮虫。

In the adult, or medusa stage of a jellyfish, they can reproduce sexually by releasing sperm and eggs into the water, forming a planula.

在海蜇成或水母阶段，它们通过将子和卵于释放到水中形成浮而进行有性繁殖。