Sealien Robotics
Sealien Robotics, formally Shenhai Zhiren (Guangzhou) Technology Co., Ltd., is a Chinese maker of subsea robotic systems founded in June 2021 and based in Nansha, Guangzhou. It builds work-class remotely operated vehicles (ROVs), trenching ROVs, subsea ploughs and cable burial and tracking systems for offshore oil and gas, subsea telecommunications, offshore wind and deep-sea mining.
News and articles
| Date | Headline |
|---|---|
| Apr. 21, 2026 | State Council Delegation Visits Sealien Robotics |
Overview
- Founded in June 2021, with headquarters and production in the Nansha district of Guangzhou. A designated high-tech enterprise.
- The product line runs from observation-class and work-class ROVs to the Phoenix 600HP trenching ROV, the Auriga series subsea ploughs and a self-developed subsea cable tracking system, plus autonomous underwater vehicles.
- The company reports holding >250 intellectual property rights, is an International Marine Contractors Association member, and carries ISO 9001, ISO 45001 and ISO 14001 certifications.
- Deep-sea mining is one of its stated application areas alongside oil and gas, subsea cables and offshore wind.
Orders and partnerships
- December 2024: an overseas order for ultra-deepwater work-class ROV core components and systems.
- March 2025: a contract to build large observation-class ROVs for a Middle East client.
- April 2025: began mass supply of core components to a leading international client, debuted its subsea cable tracking system, and won a further contract for cable burial equipment.
- June 2025: awarded a contract to deliver the Phoenix 600 ROV trencher system to an international client. Sea trials of its light work-class ROV were completed in the Middle East the same year.
- September 2025: won two bids worth tens of millions of yuan within half a month.
- January 2026: a new contract milestone for the Phoenix 600HP.
- March 2026: strategic partnership with HMN Tech in subsea cable solutions; June 2026: strategic partnership with cable maker ZTT.
- April 2026: a new-generation Auriga subsea plough completed factory acceptance testing five months after the order. The company says it built and delivered seven Auriga units in the preceding 18 months.
- 2026 visitors included a State Council delegation in April and a UAE royal delegation in July.
Ownership
Sealien is private and venture-backed. Chinese financial media reported on August 13, 2026, that it had completed a Series A round of >500 million yuan, one of the largest disclosed rounds in Chinese deep-sea robotics. The company has not published the round on its own newsroom.
- New Series A investors as reported: GRC SinoGreen Fund, Fortune Capital, GGV Capital, Addor Capital, China Insurance Investment, CETC Investment and an energy technology fund managed by Cathay Capital with TotalEnergies as the anchor investor.
- Existing shareholders reported to have followed on include Zhengxuan Investment, Yunze Capital, Yunshi Capital, Gaojie Capital and Xingzhi Capital.
- Earlier rounds: an angel round in May 2023, a Pre-A round in July 2024 and Pre-A+ funding in 2025.
- No ownership percentages have been disclosed.
Listed exposure
There is no Sealien ticker and no listed parent. The nearest listed connection is indirect: one Series A investor is an energy technology fund anchored by TotalEnergies (Euronext Paris: TTE), which offers no meaningful read on Sealien.