jelly fish

Question
There are things swimming in my salt water tank that are clear, round, about the size of a pencil eraser...The look like jelly fish...they just appeared one day...do you have any idea what they could be...There are corals, star fish, some clowns, a tang, crabs...and alot of live rock also in the tank.

Answer
I would like to help you further, but without actually seeing them I couldn't answer this properly. Could be jelly fish that may had made it in your aquarium as a hitched a ride on something that you introduced, or it could be free swimming apstasia anemones (hope this is not the case). Can you by any chance get a picture? And send it to my e-mail address. If I can't answer I know someone that should be able too. ship_planner2000@yahoo.com