Take a kayak through the mangroves inside the jungle of Iriomote Island.
Iriomote is the wildest of the Yaeyama Islands; 90% of the island is covered by dense jungle and mangroves that make Iriomote National Park the southernmost national park in Japan. The best way to see the interior of the island is by kayak. Accompanied by English-speaking instructors who will provide you with full training and equipment, then you can paddle down the Hinai River surrounded by jungle, mangroves and all kinds of interesting wildlife.
Only One Travel can also organize extended Iriomote trips that include a hike to the top of the Pinaisara waterfall for fantastic views of the entire island.