Asexual reproduction can occur by 'budding' or 'dividing' of the polyp stage.
Scyphozans and Cubozoans commonly exist in the medusa phase, whereas Hydrozoans spend about half their time in the medusa phase. Anthozoans do not have a medusa stage. A sea anemone found in British Columbia, Anthopleura xanthogrammica . J ellyfish are found in all the world's oceans and a few can also be found in fresh water. A discharged 'barb' nematocyst.