WHite, from what I have read, they hold onto their anemones, and they can put them down (like when they molt) and pick them back up. I don't know where they "harvest" their anemones from in the wild, or if they would somehow encourage the anemone to split if they lost one. You could look up "Bunodeopsis" -- that is the genus of anemone that the pom pom/boxer crabs use.