This beautiful anemone, like all anemones, fills its body with sea water ballooning until their long tentacles reach out for food. When pieces of plant or animal touch their tentacles, it stings the prey with a stinger so small it's invisible to the naked eye. This sticks the food to it and the tentacle moves the food to the center, where the mouth is. These animals aren’t harmful to humans. In fact, if you get too close, they will quickly pull themselves into their tubes.