the first full day in Oahu we went snorkeling in Hanauma Bay (well, others went snorkeling, I sat on the beach (I have this thing about fish (similar to the one I have of birds)... but that's another story).
When I was in Oahu about 15 years ago, Hanauma Bay was free and there were lots and lots of fish. This time, it costs $1 to park and $7 per person to go to the beach. It was also $2 to take the tram down the trail to the beach... it's a short walk, but I suppose if you had a lot of gear, the $2 would be worth it. We walked. There weren't as many fish as the last time either but that's because you are no longer allowed to feed them. Last time, people would bring frozen peas to feed the fish.
Last visit, I was with my friend Shirlene. We walked around the bay, to the east to the area known as the "toilet bowl"... because water rushes into a bowl that you can swim in. I don't recall if we went swimmin in the "bowl", but it was a nice walk! This time I lounged and no one seemed interested in any hike or walk, but that's ok... I was on vacation!
Here's the view of the bay as we walk down the trail and some other photos of swimmers and sun bathers. Also, a a "towel view" (the palm trees)