Revision as of 16:17, 26 February 2014

Hydrozoans

Sub-group of Gnidarians
Polyp and Medusa life stages
- Polyp is stationary and buds free floating reproductive Medusa.^[1]
Huge diversity of body types and life cycles
Often develop colonies, which can take many different forms.^[2]
- Coral-like (fire corals)
  - Unlike true corals which consist of many cells of an individual animal, Hydrozoan corals consist of individual members called Zooids that together function as a colonial animal.^[3]
- Free floating (jellyfish-like)
  - Resemble jellyfish, actually a colony consisting of multiple groups of mature Medusa

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 #Often develop colonies, which can take many different forms.<ref name="berkelyhydrozoa"> http://www.ucmp.berkeley.edu/cnidaria/hydrozoa.html</ref>
 #*Coral-like (fire corals)
-#**Unlike true corals which consist of many cells of an individual animal, Hydrozoan corals consist of individual members called Zooids that together function as a colonial animal(3)
+#**Unlike true corals which consist of many cells of an individual animal, Hydrozoan corals consist of individual members called Zooids that together function as a colonial animal.<ref name="reefbuildingsponges"> Wood, Rachael “Reef-Building Sponges” American Scientist , Vol. 78, No. 3 (May-June 1990): pp. 224-235</ref>
 #*Free floating (jellyfish-like)
 #**Resemble jellyfish, actually a colony consisting of multiple groups of mature Medusa