Beautiful rare star-shaped sand found only in Japan
Star-shaped sand is a beautiful and scientific wonder, with each grain containing microscopic single-celled organisms. This unique star-shaped sand found on the beaches of Taketomi, Hatoma and Iriomote islands in Japan, has fascinated scientists and nature enthusiasts alike.
Typically, sand is made up of rocks, minerals, and coral that have eroded into small particles over time. However, star sand is special because it comes from tiny sea creatures called foraminifera. According to Kazuhiko Fujita, a professor at the University of the Ryukyus, stellar sand consists of the limestone shells of these microscopic organisms.
Foraminifera are commonly found on the tops and bottom slopes of coral reefs. After death, their shells are brought to shore, where they become round and smooth. Over time, these shells accumulate on the beach, forming a distinctive five-pointed star-shaped layer of sand.
Wilson explains that foraminifera have small photosynthetic algae called diatoms in their shells. These diatoms absorb light and produce carbohydrates and oxygen. Foraminifera’s star-shaped shells help direct light to the diatoms, facilitating food production.
Found on the beaches of Okinawa, Japan and throughout the West and South Pacific, this type of sand is extremely rare. While islands such as Taketomi, Hatoma and Iriomote in Okinawa are famous for their star sand, this type of sand is rarely found on other islands.
In addition to its visual appeal, star sand also plays a role in protecting the islands by adding material to the beaches. Its presence contributes to coastal ecosystems, helping to protect the islands.
