The ones I had I found were freshly washed up on the beach. I put them into a bucket of salt water and took them home. When I put them in the bucket, they immeadiately opened their polips. They were completely whole and attached to a substrate. I couldn't see any damage so I think they were healthy. When I put them in the tank, they extended their polips and looked great for a while and eventually I think they starved to death for lack of proper food. They survived for a month or two.