Pakman,pakman:Jfish, Ah nice macro shots in your album! Cute baby squid! Are you using a 60mm macro lens? I don't know what settings you are using on your Nikon, but on my Canon I find I get better focused photos when I choose the center focus pt. so the camera doesn't pick the wrong subject to focus on or if you want to focus on a fish's eyes rather than it's butt
Don't worry, I find wide angle frustrating as well and continue to miss on my sunball shots!!! Some tips I've gotten (which I hopefully will get to use next time!). Instead of just shooting open water directly at the sun, try to get a subject in the picture to block or partially block the sun (maybe a diver, a bangka, etc...) for a silhouette shot. Or try to put the sun to corner or edge...
Also, are you shooting in RAW? You might want to play with the white balance in RAW to remove some of that cyan cast on the foreground of the barrel sponge photo.
Really appreciate your sharing. I saw your Cabilao pictures. real nice.
You're right, I'm using 60mm for macro and then 12-24 for WA. I also used center focus but when I shoot small stuff like triplefins, I really feel difficult to focus, and this was my first time to use viewfinder, you know I had crossed eyes in the first few dives.. @_@
Will take your advice on WA and will try out next time. sigh.. at least 3 months later

Will you fire your strobe to shoot sunburst?
I am shooting in JPEG.