1107 dive sites in 81 countries have records of octopuses.
234 confirmed by two or more independent sources, 873 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 82 octopus sites in United StatesDive sites in United States
All 58 octopus sites in PhilippinesDive sites in Philippines
All 19 octopus sites in South AfricaDive sites in South Africa
All 13 octopus sites in United KingdomDive sites in United Kingdom
Octopus sites in Dominican RepublicDive sites in Dominican Republic
Octopus sites in U.S. Virgin IslandsDive sites in U.S. Virgin Islands
Octopus sites in Solomon IslandsDive sites in Solomon Islands