Fertilization is external, producing free-living planula larva.

体，能产生自由活动的幼虫。

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

在海蜇体或水体阶段，它们通过将子和卵于释放到水中形幼体而进行有性繁殖。