While we were in Tonga, we went on a dive with Two If By Sea. We have been fortunate to dive all over the world, so have very high expectations of both the dive itself and the operator. We rate Two If By Sea as a 10/10 experience. The diving in Vavauu, Tonga is amazing, with many wonderful dive sites to choose between. The water is calm as the dive sites are mostly located within the outer reefs. /The highlight of this trip though is the hosts/guides/instructors, Fran and Stu and the actual boat itself. You are taken out on a comfortable catermaran, complete with his/her washrooms and hot showers. After two wonderful dives, you are treated to a hot lunch. Definitely a deluxe experience. Both Fran and Stu are qualified dive masters/instructors who are professional and knowledgeable, as well as lots of fun. Do NOT miss diving with Two If By Sea.