Well thats a bit like what it looks like. Ages ago in this post, I said I'd post some pictures of my underwater camera rig so here they are:
This is pretty much how I start a dive - attached to the arms are two strobes to provide light that is lacking at depth. Attached to the left arm as we look at it is a caddy for macro and wideangle lenses.
by adding and removing them I can go from close-ups like this:
to wideangle like this:
Edit: and yes, as has been pointed out on scubaboard and flickr; my couch is eighties-tastic.