While in Hawaii, I did two things purely for fun. I went to the Waikiki Aquarium and the Arizona Memorial in Pearl Harbor. This is my idea of a good time: educational activities and solemn remembrance. In my defense, I didn't have a lot of time away from the conference. And since I didn't have a rental car I had to walk/bus it everywhere. So the Great Public Transportation Experiment continued even in Waikiki.
A word on the Hawaii bus system - it's awesome. There are tons of routes, so you never have to wait very long for a bus. Automatic overhead announcements give you the cross streets and major landmarks. And the drivers (like pretty much everyone I met in Waikiki) are super friendly. You know hapless tourists are pestering them with questions 24/7, but they patiently answer with a smile and a cheerful "mahalo!"
So it was no problem for me and Baby Genius to catch a bus to the aquarium. I suggested (read: demanded) that we go there, since I love aquariums. Sea creatures are so beautiful and serene. Also, I have this idea that fish don't really know they're in captivity, which makes going to an aquarium much more enjoyable than going to the zoo. The Waikiki Aquarium is smallish, but they had some cool exhibits. These included the oldest giant clam known to man and a couple of adorable seals.