Tokakinsone

This dive site, Tokakin Sone, located off Iriomote Island, is renowned as one of Japan's premier big-fish encounters, named for its frequent sightings of isomaguro (dogtooth tuna). It features a distinctive 15-meter deep mountainous root, making it an ideal location for drift diving. While no specific historical events are detailed, its notoriety stems from its consistent pelagic action, offering a dynamic underwater experience as divers are carried along by the prevailing currents. The marine life here is exceptionally rich, characterized by dramatic schools of barracuda and bigeye jacks, alongside the eponymous isomaguro. Beyond these large pelagics, divers can observe various sea stars, vibrant butterflyfish, and graceful sea turtles, contributing to the site's overall abundant fish life across its rocky structures. The best time to visit Tokakin Sone is generally during periods of good weather when visibility is optimal, although specific seasonal highlights for different animal sightings are not provided. Divers should be prepared for strong currents, which are a defining feature of this drift dive and crucial for attracting the large pelagic species. While beginners are welcome, they must exercise caution and ideally be accompanied by experienced guides familiar with the site's conditions. Freedivers may find the strong currents challenging, making it less suitable for casual breath-hold diving.