Anemone ID

[marie]

I've been researching anemones and after much thought decided maybe a Long tentacled anemone (Macrodactyla doreensis) would be the best for me. They like to keep their foot in the sand and aren't prone to wondering up the rock work (where my tunze stream is).

So when the local lfs had what appeared to be a partially bleached but otherwise healthy looking LTA, I brought it home. When first introduced into my tank I rested it on a rock ledge for a minute so I could clear a spot for it in the sand bed, well within 2 minutes it was firmly attached to the rock and the only way I was going to get it off was in pieces and it has sat there ever since, just burrowed a little deeper into the crevice.
It is bleached but not as bleached as it looks in the picture and the foot is orange. so could it be a Macrodactyla doreensis? or is it some thing else