I have been lucky enough to have visited Tahiti and Fiji with our travel group: Too Much Fun Club. In the early 90's, we started a social/travel club and took our members all over the world on group trips. We did alot of scuba and touring. Great fun. Our best trip was Bali/Thailand in 92.
Here is a look at some atolls in the South Pacific. This is a great film by a cruising couple.