So I was repositioning a dead sps coral that has some Zoas on it I bought at my fish store and low and behold I discovered that a lot of what I had thought where small branches of the dead coral where small clams. I wasn't sure if it could be bad since I'm fairly new to the hobby so I removed them(8) and have them sitting in a bucket I don't mind keeping them as long as they are safe. Please let me know what u think. Thank you.