Adhesive anemone

Cryptodendrum adhaesivum

''Cryptodendrum'' is a genus of sea anemones in the family Thalassianthidae. It is monotypic with a single species, ''Cryptodendrum adhaesivum'', also commonly known as the adhesive anemone, pizza anemone, and nap-edged anemone. Like all symbiotic anemones it hosts ''zooxanthellae'', symbiotic algae that help feed their host.