# Researchers Build a Four-Legged Robot That Walks on Water to Pull Drowning Victims Out

The QuadBoat, developed in Shenzhen and New Jersey and inspired by the fishing spider, uses model-predictive control to stand, move, and retrieve objects on the surface.

- Published: 2026-07-26T05:32:56.369Z
- Canonical: https://polylog.news/ai/2026-07-26/researchers-build-a-four-legged-robot-that-walks-on-water-to
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news)

Researchers described the QuadBoat, a quadruped surface vehicle designed to move on water and physically retrieve drowning victims or floating targets. The work comes from the Shenzhen Institute of Artificial Intelligence and Robotics for S…

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