Beach sand shaped like stars

Star-shaped foraminifera shells in Okinawan beach sand — labormikro / Wikimedia Commons, CC BY-SA 2.0. Original photograph resized.

On some Okinawan beaches, tiny star-shaped grains are the empty shells of single-celled marine organisms called foraminifera.

Selected star-shaped shells from Hatoma Island; the field is 15 mm wide — Siim Sepp / Sandatlas; original specimen photograph.

Each little star used to hold a living cell.

This is beach sand.
On some Okinawan beaches, tiny star-shaped grains are the empty shells of single-celled marine organisms called foraminifera.
Each little star used to hold a living cell.

Beach sand shaped like stars

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