I have been out of town for 3 weeks and while I was away my husband told me that he saw 2 of what appeared to be Jellyfish in my SW tank. I thought at first that he was kidding or seeing things. But when I got home they were there. I couldnt believe it. They are really tiny, smaller than a Pea. Im unsure it they really are Jellyfish but that is what they look like. If they are then how did I get them?? Here's a pic.