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Research EPFL, Switzerland

Small, medium or large, a robotic fish maintains its swimming ability

Researchers at EPFL and New York University have developed ScaFi, a scalable robotic fish that can be produced in various sizes while preserving fish-like swimming motion. The design uses a rigid front and a flexible tail with a single motor and crossed tendons, and only the tail rod diameter changes with size. Three prototypes (0.6, 1.1, and 2.9 m long) were tested in laboratory and field conditions, showing consistent swimming gait across scales, though energy efficiency varied.

Published
4 Sept 2026
2 min read 1 source
Intelligence brief
EPFL, Switzerland / Research
CH

Researchers at EPFL and New York University have developed ScaFi, a scalable robotic fish that can be produced in various sizes while preserving fish-like swimming motion. The design uses a rigid front and a flexible tail with a single motor and crossed tendons, and only the tail rod diameter changes with size. Three prototypes (0.6, 1.1, and 2.9 m long) were tested in laboratory and field conditions, showing consistent swimming gait across scales, though energy efficiency varied.

Why it matters

The EPFL‑based research advances Swiss AI by providing a scalable, AI‑informed robotic platform for autonomous underwater monitoring across diverse aquatic environments.

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EPFL News

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