959 dive sites in 45 countries have records of reef sharks.
37 confirmed by two or more independent sources, 922 reported by one source.
Sites are ranked by evidence: first by how many independent divers logged the animal there, then by how many independent sources confirm it. "Best" here means most independently confirmed, nothing more.
All 127 reef shark sites in IndonesiaDive sites in Indonesia
All 28 reef shark sites in United StatesDive sites in United States
All 108 reef shark sites in AustraliaDive sites in Australia
All 69 reef shark sites in PhilippinesDive sites in Philippines
All 36 reef shark sites in Costa RicaDive sites in Costa Rica
All 20 reef shark sites in French PolynesiaDive sites in French Polynesia
Reef shark sites in Papua New GuineaDive sites in Papua New Guinea
Reef shark sites in Cocos (Keeling) IslandsDive sites in Cocos (Keeling) Islands
Reef shark sites in British Virgin IslandsDive sites in British Virgin Islands
Reef shark sites in U.S. Virgin IslandsDive sites in U.S. Virgin Islands