I would not recommend getting too close if you can not take your time getting closer and move like a snail. I got this shot by pure luck, I just happen to be at the right place , at the right time and did not panic. It took me about 5 minutes to get this close without making the Scorponfish feel like he was in any danger at all.
Shoot at Crash Boat Beach in Aguadilla, Puerto Rico, Depth 28 feet, Vis 15-20 feet, duration of dive 72 minutes, water temp 73ºF
Camera, Intova IC-12, Red filter, 12MP, stock lens