Dahlia anemones are large sea anemones, having as many as 10 to 160 tentacles. This anemone is easy to recognize when scuba diving. It has bands that run from the mouth to up and around the tentacles. Sometimes, there are even bands on the tentacles. The mouth of the dahlia anemone is found in the middle of all the tentacles, surrounded by very thick lips. The dahlia anemone is also known by the name northern red anemone.