This
anemone resembles a large, shaggy area rug when opened up. Periodically,
it closes up to digest the "food" it has captured on it's
sticky, stinging tentacles. When this happens, the resident anemonefish
(aka clownfish) who use the anemone for protection are temporarily displaced
and vulnerable. The fish are rendered immune to the stings by secreting
a mucous that resembles the scent of the anemone.