Freshwater jellyfish, chiefly represented by the hydrozoan Craspedacusta sowerbii, exhibit a complex metagenetic life cycle comprising benthic polyps and pelagic medusae. Native to East Asian river ...

Those free-swimming jellyfish in the sea don't start out in that familiar medusa form, but rather start as sessile and asexual polyps. Now, researchers have discovered what triggers that ...

Jellyfish are an ancient and successful group of animals. An in-depth look at the genome of the moon jelly, Aurelia aurita, shows that it uses a common set of genes to transition between polyp and ...

Jellyfish clone themselves by morphing into a stack of squirming jellyfish pancakes. When grown-up jellyfish love each other very much, they make huge numbers of teeny-tiny potato-shaped larvae. Those ...

The first in-depth look at the genome of a jellyfish -- the moon jelly Aurelia aurita -- shows that early jellyfish recycled existing genes to gain the ability to morph from polyp to medusa. Jellyfish ...

Jellyfish undergo an amazing metamorphosis, from tiny polyps growing on the seafloor to swimming medusae with stinging tentacles. This shape-shifting has served them well, shepherding jellyfish ...