Where was Dolphin Reef filmed?
2018 documentary film by Alastair Fothergill and Keith Scholey
Wikidata records no filming location for Dolphin Reef (2018) at all, not a place, not even a country. There is nothing to pin, and this page says so rather than guessing.
Why there is no pin
Its Wikipedia article also says it was filmed in Florida, French Polynesia, Hawaii, without naming a place, so it is not on the map.
Filming locations that are mapped there: United States · France