Yakushima Diving Guide Yumegokochi is a diving and marine-activity business on Yakushima Island, founded in 2013 and led by representative Tomoki Kawahara. Reorganized in 2025 as an island-based shop specializing in diving for beginners, it welcomes first-timers, newly certified divers, and people returning after a break, while also guiding experienced divers at a pace suited to their skills. Its services include introductory diving, fun dives, snorkeling, and combined diving and trekking experiences.

A featured option is its premium introductory dive, which emphasizes clear instruction, careful preparation, and practice with buoyancy control—an uncommon focus in trial dives. The guide aims to make underwater activities safe, approachable, and enjoyable through attentive, personalized support. Yakushima’s waters, influenced by the Kuroshio Current, are known for abundant marine life, and guests may encounter sea turtles, colorful fish, and coral.

The business also provides course information, reservations, travel access guidance, and updates through its marine activity blog. Yumegokochi invites visitors to discover the island’s ocean as another memorable part of a Yakushima trip