Just returned from 7 days of diving (22 dives) along the Southeast region of Oahu. Vis changed almost hourly in some locations.
I will be posting an extensive trip report soon but poor vis was not restricted to shallow dives nor was good vis restricted to deep dives. 1st dive was on the YO and vis was a mere 40 feet horizontal with a ripping 4 knot current (March 1st) while a dive at the Hawaii Loa reef gave us 80 feet plus horizontal vis just 4 days later.
All in all, the diving was good. The surface conditions were the biggest problem and on each of our 3 trips out to do wall dives around the Koko Head area, conditions were definitely not for the faint of heart. We endured some serious rocking and rolling but once below the waves, we simply enjoyed riding the surge along with all the fish, turtles, and eels. We did each of these as drift dives which worked very well.
One more highlight here - the rest of the information will be in my trip report - on almost every dive and most prevelent during the wall dives around Koko Head, we listened to the whales singing almost endlessly. This was my first time ever hearing whales while diving and it created quite a nice atmosphere. I found myself routinely peering out towards the deep expecting at any moment to have a whale or two come cruising past. Never did observe any underwater but I did see whales almost every day during boat trips to the various dive sites.
Enjoy!
NW_DiverDude (Ray)