Hike and kayak your way around Iriomote on this day-long eco tour from Ishigaki. Teeming with unspoiled nature, the island is best seen with a guide. Do just that, and follow a guide on an easy kayak route along the Nishida River. Stop to trek to Sangara Falls, where a bento box lunch awaits. Cool down with a swim, and then kayak back to base. This small-group tour, limited to just 10, lets you learn about the island’s untamed national park and the ongoing efforts to keep it thriving.