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Tethys Robotics develops compact autonomous underwater robots designed for inspections in turbid, high-current waters. The company has raised over CHF 8 million, including CHF 3.5 million from PreSeed 2025.

Their unique technology combines hybrid AUV/ROV operations, advanced sensor fusion, and real-time 3D mapping. This innovation addresses the increasing demand for automation and frequent inspections in the subsea sector, driven by rising costs and security concerns. Tethys aims for their technology to establish autonomous inspections as the norm within five years, significantly reducing offshore risks and costs.