Throughout their lifecycle, jellyfish take on two different body forms: medusa and polyps. Polyps can reproduce asexually by budding, while medusae spawn eggs and sperm to reproduce sexually.

Where do jellyfish lay their eggs?

There are a few jellyfish species that receive sperm through their mouths to fertilise eggs inside the body cavity, but most jellyfish just release sperm or eggs directly into the water. Under favourable conditions they will do this once a day, usually synchronised to dawn or dusk.

How do jellyfish have babies?

Jellyfish reproduce both sexually and asexually. One generation (the medusa) reproduces sexually and the next generation (the polyp) reproduces asexually. ... For both species, fertilized eggs develop into a multi-cellular planula and then into polyps that live on the sea floor.