O'ahu underwater

As much as there is to see above water in Hawai'i, there is a whole other world below the surface.

Hanauma Bay is an extinct and sunken volcano that over a few years turned into a reef and fish sanctuary. It is primo snorkeling when in Waikiki. It is between Koko Head and Koko Crater on the eastern side of the island.

Trust me, it is worth swimming with these fishes!