1102 dive sites in 78 countries have records of manta rays.
246 confirmed by two or more independent sources, 856 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 24 manta ray sites in Costa RicaDive sites in Costa Rica
All 65 manta ray sites in PhilippinesDive sites in Philippines
All 55 manta ray sites in United StatesDive sites in United States
All 12 manta ray sites in MozambiqueDive sites in Mozambique
All 17 manta ray sites in South AfricaDive sites in South Africa
All 12 manta ray sites in Timor-LesteDive sites in Timor-Leste
Manta ray sites in United KingdomDive sites in United Kingdom
Manta ray sites in Dominican RepublicDive sites in Dominican Republic
Manta ray sites in French PolynesiaDive sites in French Polynesia
Manta ray sites in Solomon IslandsDive sites in Solomon Islands