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First, Miyako Island was originally formed from uplifted coral reefs. Over time, these reefs rose above sea level, creating the unique landform that exists today. This natural phenomenon is quite distinct from other islands and coastal regions. The resulting geology, known as Ryukyu limestone, is highly permeable, allowing rainwater to quickly seep into the ground rather than flow directly into the sea. This reduces the amount of sediment and mud entering the ocean, helping to keep the water clear.
Additionally, since there are no large rivers on Miyako Island, there is very little sediment or organic matter being carried from rivers into the sea—another reason the water remains exceptionally clear.
The vast coral reefs surrounding the island also act like natural filters, absorbing fine organic matter and impurities from the water. These reefs not only hint at the island’s history of once being submerged but also continue to play a vital role in maintaining the beauty and clarity of the ocean.
Thanks to this combination of geological and geographical conditions, Miyako Island’s waters are considered among the clearest in the region. While often compared to Ishigaki Island, Miyako’s unique natural features give it a distinct advantage in water clarity. In fact, the transparency of its waters rivals that of the Great Barrier Reef.
This exceptional clarity makes Miyako Island a perfect environment for snorkeling and diving, captivating visitors with its vibrant marine life. Colorful tropical fish living around the coral reefs can be seen clearly in the transparent sea, enhancing the underwater experience.
In this way, the remarkable clarity of Miyako Island’s ocean is a result of its distinctive terrain and natural conditions, making it a truly special resort destination.