Tiny underwater algae sway gently in the current. All of a sudden, a light shines on them and they form robotlike arms that start to pick up small rocks and put them in floating baskets. Sounds like science fiction, but researchers from Delft University of Technology (the Netherlands) have crea...

Source: [Phys.org](https://phys.org/news/2026-10-algae-powered-soft-robot-arm.html)

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