Ryukyu limestone is a porous natural stone (sedimentary rock) widely distributed throughout the Ryukyu Islands (Okinawa and Amami Islands). It was formed over hundreds of thousands of years as the remains of dead organisms (such as coral fragments, foraminifera fossils, shell fragments, calcareous algae, and so on) coalesced and accumulated amid ocean currents and eventually rose to form islands.
Over an immeasurably long period of time, various marine forces—such as decomposition and weathering caused by seawater, rainwater, winds, waves, sunlight and so forth—have sculpted these rocks into complex and mysterious shapes.
It contains countless microscopic pores that absorb and release the ocean’s atmosphere and harbor innumerable microorganisms. It can be described as “the living rock that continues to breathe.”
Due to its high water absorption and porosity, moss growth and darkening or destruction caused by weathering occur, giving rise to its rough surfaces and divine, strange shapes.
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