Marine Lake

This dive site, Marine Lake on Shimoji Island, Okinawa, offers a unique blend of cave and open water diving. Divers navigate through underwater passages that connect this brackish lake to the surrounding ocean. A highlight is the cave route that leads to a surface pond, where natural light penetrates through ceiling openings, creating captivating laser-like beams. While no specific history is provided, its geological formation as an inland lake with oceanic connections makes it a natural wonder. The site is home to diverse marine life, especially within its cave systems, including red lionfish, southern moray eels, and Japanese parrotfish. The freshwater and brackish sections of the pond host small freshwater fish, shrimp, and unique brackish-water species, offering a distinct ecosystem not commonly found in typical ocean dives. The best time to visit Marine Lake is likely during periods of good weather when sunlight can effectively penetrate the surface pond, enhancing the 'laser beam' effect. This site is particularly recommended for those seeking a unique cavern/cave experience and unusual marine encounters. Both freedivers and scuba divers will find the 17-meter maximum depth and stunning light shows appealing, making it a memorable dive for various skill levels.