I was just visiting another blog and noticed this post by Andrew from "A Darker View" which is a great blog largely about astronomy and also has a fair amount of posts about his Big Island diving experiences. He managed to get a shot of an oddball jelly on the reef. We rarely see them on the reef, but a few weeks back there was a 4 day span of strangeness where the viz was well over 200' and there were crown jellyfish, comb jellies and other deep water stuff on the reef for a couple of days. Kinda neat. I took my camera down on one dive that week and saw a few things and realized too late that I'd left my memory card in the computer at home. I'm glad he got a shot of one while they were around. It's something you normally need to a blackwater dive to see.