(1) It has been seen that varying temperatures have a dramatic effect on the growth rates of some actinians .(2) The larger, more conspicuous include other species of cold-water coral, actinians and sponges.(3) Even on reefs, most species of host actinians are inconspicuous, unlike their partner fish.(4) However, actinians , like all coelenterates, capture and digest animal prey with their nematocysts.(5) Cold-water coral mound dominated by Lophelia pertusa and colonised by orange actinians and a white anthipathrian.
