Class Anthozoa Ehrenberg, 1831 Subclass Octocorallia Haeckel, 1866 - octocorals see Subclass Alcyonaria 1 Order Helioporacea - helioporaceans 2 Order Pennatulacea - sea pens and sea pansies 3 Order Alcyonacea Lamouroux, 1816 - soft corals