Got a new rock a couple of days ago and today we noticed a little blackish anemone, its about the size of a dime, tried to get a pic but to blurry, it has short bubble like tenticles that look like they have sharp points to them , they also have a couple of white rings on each tenticle. I know it would be easier with a pic , but hopefully someone could ID this for me Is it a good guy or a bad one. It also seems flat not extended. Thanks in advance!!!!