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anemone, sea anemone
marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton
fleshy featherlike warm-water colonies
marine colonial polyp characterized by a calcareous skeleton; masses in a variety of shapes often forming reefs
actinia, actinian, actiniarian
any sea anemone or related animal
gorgonian, gorgonian coral
corals having a horny or calcareous branching skeleton
madrepore, madriporian coral, stony coral
corals having calcareous skeletons aggregations of which form reefs and islands