I had a a small round coral fragment of some description attached to the stem of my toadstool( i hope this is a common name),it's about 1 inch in diameter,has a hard base with a round green fleshy body with small clear tentacles about every couple of mm around the edge.I had to remove it as the stem was bending over and smothering it and attached it to a piece of rock else where,any ideas would be appreciated.