This process is called strobilation, and the polyp at this stage is called a strobila. The genes responsible for metamorphosis between polyp and jellyfish remained a mystery until now. The ...

Jellyfish have no brains and no hearts and ... Polyp: Develops into multiple body segments (strobila). Can clone itself asexually. 4. Strobila separate and float away as free-swimming ephyra.