Thoroughly enjoyed this tour, Hugh is very knowledgeable about the history of the harbor area. The day was overcast and rainy but the boat is covered and quite comfortable. The tour goes to three different areas of the harbor to show the various habitats. The first is an area with lots of different fish, both large and small. While we were down in the bottom of the submersible, Hugh and his helper are throwing out food to call the fish and we were soon surrounded by a tremendous amount of different species of fish. Highly entertaining to watch and very colorful. The next area is the shipwreck of the SS Mai Tai, which sunk in 1916 when all hands went to shore for Christmas Eve. The engine still sticks out of the water and is mistakenly called the boiler. This wreck is easy to see as it's only 10M deep. There are model T cars and many other interesting items clearly visible. The third site is the natural sand harbor at Avarua and it's adjacent coral wall, again with many species of fish and shell fish. We also saw a school of Puffer fish on the way back to dock. The tour lasted about 90 minutes and is family friendly.