Discosoma

thumb|right|Discosoma nummiforme Discosoma is a genus of cnidarians in the order Corallimorpharia. Common names for the genus include mushroom anemone, disc anemone and elephant ear mushroom.

Most species are disc-shaped and produce large amounts of mucus. There are a great variety of colors, including metallic and fluorescent shades and striped and spotted patterns. Discosoma gather food particles from the water. Some species absorb nutrients produced by zooxanthellae, photosynthetic dinoflagellates living in their tissues in a symbiotic relationship.