Coral (Stichodactyla haddoni, Ukwiał dywanowy) - These Carpet Anemones are my favorites. Clown fish will love them too. Word of caution if your clown fish was breed/raised in captivity it most likely will not know / use an Anemone for a home.
Photography: Remains of Autumn by Jessica Jenney. Sharla Hicks's Note: What amazes me is how much this looks like a painting. HDR photography: Uses multiple images to derive effect. HDR imaging exaggerates contrast for artistic effect.