I just got back from Hawaii, and it was absolutely awesome! I'm very new to SCUBA diving, but I've been into photography for a long time.
My wife and I went to Hawaii over Memorial Day weekend (plus a couple of days). On Oahu, I did two dives: Baby Barge, and a reef drift... I can't recall the name now. Both were great, but Baby Barge had some incredibly strong currents, so I sucked most of my air in less than 25 minutes. On Kauai I mainly snorkeled around Tunnels Beach, which was spectacular. Looking back, I wish I would have gone diving on Kauai as well, but I didn't want to spend too much time away from my wife while we were both on vacation (she doesn't dive). We ended up doing lots of hiking and other outdoor activities. Next time!
In any case, these are my favorite photos from the trip:
My setup consisted of the following: Olympus E-PM1, Olympus underwater housing (PT-EP06), Zen glass dome lens port, Olympus 9-18mm, Sea & Sea YS-01 strobe, flex arm.