It will then start to mature and grow. Larvae mature into polyps, which will then bud off and mature into young jellyfish.' An adult jellyfish is known as a medusa. Jellyfish belong to a group called ...

Immortal jellyfish are part of the Cnidaria group, which is also where ... which settles on a surface and grows into a polyp, which is a blob-like cyst. This is the stage where the jellyfish ...

All Cnidarians have a simple stomach with a single mouth opening surrounded by stinging tentacles (see graphic). Each coral animal is called a polyp. Most corals live in large groups or colonies ...