This dive site, Shimamawari, is renowned for its unique underwater topography, resembling Australia's Ayers Rock submerged beneath the waves. The site features dramatic drop-offs on all sides (east, west, north, and south), with the top of the 'root' starting at 6 meters and the base extending to 30 meters. A notable feature is a small cave on the west side, adding an element of exploration. While currents can be a bit swift, they are generally manageable, making navigation around the massive structure a captivating experience.
Shimamawari boasts a rich diversity of marine life. The wide tops of the roots are vibrant, covered with extensive corals and anemones, providing a home for numerous smaller creatures. Migratory fish, such as amberjack and yellowtails, are frequently observed due to the site's dynamic tidal conditions. Year-round sightings include hawksbill turtles and whitebait. In the winter months, the site becomes a hotspot for larger pelagics, with stingrays and even basking sharks making appearances.
The best time to visit Shimamawari for observing larger marine life like stingrays and basking sharks is during the winter months. Throughout the year, divers can enjoy excellent opportunities to see hawksbill turtles and a variety of fish. The site's shallow top (6m) makes it suitable for snorkeling, offering a glimpse into the vibrant coral and anemone life. Freedivers will also appreciate the accessible depths and interesting topography, though caution is advised regarding the swift currents.
