Tethys Robotics Pioneers Autonomous Underwater Inspections, Securing $8 Million in Funding
A Swiss robotics startup, Tethys Robotics, is poised to revolutionize subsea infrastructure inspection with its autonomous underwater robots. The company has secured over CHF 8 million in funding, including CHF 3.5 million in a PreSeed round in 2025, and is preparing for a key investor roadshow in Barcelona in March.
Addressing a Critical Need for Underwater Autonomy
Tethys Robotics develops compact autonomous underwater vehicles (AUVs) designed for inspecting, monitoring, and securing subsea infrastructure in challenging environments – those characterized by rough waters and confined spaces. According to a company release, what sets Tethys apart is its unique combination of hybrid AUV/ROV operation, advanced sensor fusion, and real-time 3D mapping. This allows for high-quality data collection without the need for large, expensive vessels.
The Rise of Automation in Maritime Industries
The company is capitalizing on a significant shift toward automation and remote operations within the subsea and maritime sectors. Rising costs, workforce shortages, and increasing security concerns surrounding critical underwater infrastructure are driving this demand. Simultaneously, regulatory bodies and asset owners are requesting more frequent, data-driven inspections – a need traditional methods struggle to meet.
From ETH Zurich Lab to Real-World Solutions
The genesis of Tethys Robotics lies in research conducted at ETH Zurich, where the founding team identified a gap between cutting-edge robotics research and practical, deployable offshore solutions. “We saw a clear gap between cutting-edge robotics research and what was actually deployable offshore,” stated a senior official. Tethys was established to bridge this divide and bring autonomous technology to real-world subsea operations.
A Multi-Billion Dollar Market Opportunity
Tethys Robotics is targeting a global market encompassing subsea inspection, monitoring, and maritime security, serving industries such as offshore energy, telecom cables, ports, and defense. This represents a multi-billion-dollar market with substantial long-term growth potential as underwater infrastructure continues to expand and become increasingly vital. The company currently boasts 18 employees and a founding team of seven, led by CEO & Co-Founder Jonas Wüst, a Swiss national based in Zurich.
Vision for the Future: Autonomous Subsea Inspection as the Norm
Looking ahead five years, Tethys Robotics aims to establish autonomous subsea inspection as the standard practice. Their goal is to significantly reduce offshore risk, lower costs, and minimize the environmental footprint of operations by enabling continuous, reliable underwater situational awareness from shore-based control centers.
Navigating Challenges and Maintaining Motivation
One of the primary challenges the company faces is building trust within the traditionally conservative maritime and defense markets. This requires successful real-world deployments and the establishment of strong partnerships. Despite these hurdles, the team remains motivated by the tangible impact of their technology. “What motivates me is seeing our robots operate successfully in environments where traditional methods struggle, and knowing that our technology can make offshore work safer and more sustainable,” one team member shared.
Barcelona Roadshow: Positioning for Growth
Tethys Robotics is participating in the Venture Leaders Roadshow to connect with experienced founders, investors, and partners who possess a deep understanding of scaling deep-tech companies on a global scale. The company is particularly enthusiastic about the strategic discussions, valuable feedback, and the opportunity to position itself for its next phase of growth and a future funding round.
