From a snorkeling tour to Amitori Bay, just a short distance from Funauki, but virtually inaccessible without a boat. The scenery of the south-western side of Iriomote Island is beautiful in itself, but take a dive and it's a different world entirely.
Unfortunately it got cloudy after a while. I'd love to go again when it's sunny.
(Also the footage becomes even bluer when cloudy.)
The corals at Amitori Bay almost completely died a couple of years back, due to a lack of typhoons coming to stir up cold water, according to our guide. Currently they have partly recovered, but are threatened by the rising sea temperatures accompanying climate change.