Waah. This post makes me yearn to return to Lembeh. I was only there once, and while my buoyancy skills were good enough that I did not touch the bottom, I want to return now that I have improved my skills considerably. If the current made it difficult to maintain position, I just didn't get that close to the subject. Touching the bottom was not an option I would have considered. I do not touch anything that is not clearly devoid of life. "Because it is muck diving"/strong current/whatever is no excuse for intentionally touching the bottom, in my opinion. I would advocate putting in the time to practice not touching the bottom before diving in such a jewel as Lembeh.