At the lake bottom. (IMAGE)

University of Tokyo

At the lake bottom.

Caption

The alga Aegagropila linnaei can live as free-floating filaments, grow on rocks, grow into the signature ball shape and form flattened balls when squished, depending on their environment. Ball growth is slow at about 5 millimeters per year and they can live for centuries.

Credit

2022 Yoichi Oyama

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License

CC BY

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