AnthozoaCnidariaSea AnemonesHydrozoaHydraPhylogenyNematocystCnidarian VenomsLuminescent ProteinsColorScyphozoaCtenophoraMolecular Sequence DataDinoflagellidaPlacozoaCubozoaMyxozoaInvertebratesPoriferaSymbiosisEvolution, MolecularLife Cycle StagesBites and StingsBiological EvolutionAmino Acid SequenceEmbryo, NonmammalianHistocompatibility Antigens Class IMetamorphosis, BiologicalAnnelidaGenes, HomeoboxBody Patterning