The ability of metazoans (multicellular animals) to regenerate lost body parts varies greatly. Some animals can regenerate their whole bodies, including phyla Cnidaria such as jellyfish ...

What’s a ‘medusa’? Jellyfish actually have two forms. One is the floating, pulsating creature that everyone knows, called a medusa. The other is a tiny polyp that lives attached to the ground. Medusae ...

After the jellyfish died, the student moved its body to another tank. Three months later, a tiny new polyp was growing from the dead jellyfish - proving this regeneration process.