Not to hijack your thread but is this also Majano. It came with some clowns but they don't go by it and it seems to move all time sometimes into caves.
That is definately not a mejano. Looks to me like a Long Tentacle Anemone. It is probably needing light if it is wondering all over the place, or you have too much flow.
The rock was tiny, so it was removed out of the system and boiled in a pot of hot water for 30 minutes. It will get scrubbed down with a toothbrush and inhabit my sump.