Cnidaria Anthozoa

• Sea anemones - solitary
• hard corals and soft corals - colonial
• no medusa stage in development - adults almost all attached to the seabed, in polyp form
• two main subclasses

  hexacorallia - 6 fold symmetry (hard corals, sea anemones, tube anemones, zoanthials)

  ocrocorallia - 8 fold symmetry (soft corals, golgorians, sea pens, fans, and whips, and sea pansies)