Hydrozoans

• Hydrozoans- o Description  Sub-group of Gnidarians  Polyp and Medusa life stages • Polyp is stationary, buds free floating reproductive Medusa¬¬(1)  ¬Huge diversity of body types, life cycles  Often develop colonies, which can take many different forms(2) • Coral-like (fire corals) • Free floating (jellyfish-like) o Resemble jellyfish, actually a colony consisting of multiple groups of mature medusa o Distribution  Found in every ocean around the world  Almost entirely in salt water  o Symbiotic Relationships o Reef Building