Star sand (Japanese: 星砂, romanized: hoshizuna, lit. 'star-sand'), also known as living sand, is a rare sand-like substance made up of the star-shaped skeletal remains of marine foraminifera in the family Calcirinidae. When the Calcirinids die, their skeletons are swept from their reef habitats and accumulate by the billions on shore.
Star sand (Japanese: 星砂, romanized: hoshizuna, lit. 'star-sand'), also known as living sand, is a rare sand-like substance made up of the star-shaped skeletal remains of marine foraminifera in the family Calcirinidae. When the Calcirinids die, their skeletons are swept from their reef habitats and accumulate by the billions on shore.
Source: Wikipedia "Star sand" · CC BY-SA 4.0
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