Tumon Bay, Gun Beach - This is a common beginer site located in what I called "Little Waikiki". There's an underwater telephone cable to follow out through a notch in the reef, and the marine life is interesting. Lots of giant clams and bulbous sea stars (but I didn't find any giant giant clams). Gab Gab. Interesting dive at the Big Navy base. Starting out, one climbs down a ladder in what used to be a submarine bay. Just outside the bay, the reef drops off and plate corals and sponges abound. Interesting dive! We found some ulua and a large school of unicornfish.