120 dive sites in 13 countries have records of harlequin shrimp.
16 confirmed by two or more independent sources, 104 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 72 harlequin shrimp sites in IndonesiaDive sites in Indonesia
All 14 harlequin shrimp sites in ThailandDive sites in Thailand
All 12 harlequin shrimp sites in PhilippinesDive sites in Philippines
Harlequin shrimp sites in Costa RicaDive sites in Costa Rica