Philippines, Southern Visayas route with the Philippine Siren

for a full screen nudi shot, you're generally going to have to decide what gets to be in focus.  It won't be all of it.  The rhinos are the obvious first choice.   if you can shoot head on, or parallel to the body (or close), then you get more in the focal range.   When you have the more active ones moving over terrain, you get a lot of potential different poses, some with half the body in the water column.

on the super macro, your best bet may be to actually flip the strobes to point at you.  just remember to close your eyes or look elsewhere.  Mike at Crystal Blue has written a few articles on this.   The other gimmick I first heard from him is to use small handheld light in the sand to backlight or even sidelight the subject.   Then there is the snoot stuff, but that strikes me a great way to frustrate the hell out of oneself - save that for after you're bored with the normal?

Dave - Anilao is just across the straight from PG.   It's basically shooting fish in a barrel at times.  Might see a half dozen leafy scorpionfish on the same dive.   Format is 2-3 dives with a dive guide.   spend a few minutes shooting your subject, find another or have the DG insistently lead you to one.   Only the must haves like the pygmy sea horse or perhasp the blue ringed are a take a few shots quickly and let the next person in.   For macro, it's the greatest, and cheapest 10 day trip I've ever seen.   Lembeh I believe is on par, but for me at least, more expensive/much harder to get as opposed to an easy San Francisco to Manila + 3 hour van ride.