Also called clustering anemone, pink-tipped green anemone or surf anemone.
Look for pale green tentacles with pinkish or purple tips. They are found in colonies of small individuals (up to 3 inches across) covering large areas of sand or rocks.
They attach to rocks at or below the surface, but sand seems to be important for them to colonize. If you look closely, you may see one of the anemones splitting in half, making two identical anemones where there was once just one.