Stalked jellyfishes do not have an alternation between a polyp and medusa stage. Most of them have a trumpet-shaped body with a stalk and a number of branches or arms with tentacles on the end. Eggs are spawned and form creeping larvae. The larva crawl around until it finds a suitable spot on a rock or algae. The stalked jellyfishes also practice asexual reproduction by splitting their body into new individuals.
Most species are found in cold waters, close to the shoreline.
All stalked jellyfishes are members of the order Stauromedusae, previously included in the class Scyphozoa. However, recent genetic studies have concluded that they should be in a separate class. Consequently, the only order in the new class Staurozoa is Stauromedusae.