I’ve not seen one this small before. He was poking out of his hole in the sand and seemed fascinated by what I was (a hulking great diver thing with bubbles and huge camera & strobes). He actually allowed me to get very very close to him (I had a 60mm lens on) a totally fearless little guy!
Best viewed large for more details on him.
Taken in Raja Ampat, Indonesia, Nikon D300 & 60mm macro, subal housing, Inon 240 strobes.