In pics: Deep-Sea Advanced Technology & Equipment Achievement Exhibition in Sanya, China's Hainan

An exhibitor introduces a product to visitors at the Deep-Sea Advanced Technology &Equipment Achievement Exhibition in Sanya, south China's Hainan Province, Oct. 29, 2025. The exhibition, which took place here from Oct. 28 to 30, featured a total of 123 exhibits including deep-sea operation equipment, unmanned vehicles, communication and navigation devices, sensors, etc., highlighting China's innovative achievements in deep-sea technology. (Xinhua/Pu Xiaoxu)

This photo taken on Oct. 29, 2025 shows models of underwater gliders at the Deep-Sea Advanced Technology &Equipment Achievement Exhibition in Sanya, south China's Hainan Province. The exhibition, which took place here from Oct. 28 to 30, featured a total of 123 exhibits including deep-sea operation equipment, unmanned vehicles, communication and navigation devices, sensors, etc., highlighting China's innovative achievements in deep-sea technology. (Xinhua/Pu Xiaoxu)

This photo taken on Oct. 29, 2025 shows an atmospheric diving system (ADS), a system enabling divers to work under normal atmospheric pressure in deep-sea, at the Deep-Sea Advanced Technology &Equipment Achievement Exhibition in Sanya, south China's Hainan Province. The exhibition, which took place here from Oct. 28 to 30, featured a total of 123 exhibits including deep-sea operation equipment, unmanned vehicles, communication and navigation devices, sensors, etc., highlighting China's innovative achievements in deep-sea technology. (Xinhua/Pu Xiaoxu)

People visit the Deep-Sea Advanced Technology &Equipment Achievement Exhibition in Sanya, south China's Hainan Province, Oct. 29, 2025. The exhibition, which took place here from Oct. 28 to 30, featured a total of 123 exhibits including deep-sea operation equipment, unmanned vehicles, communication and navigation devices, sensors, etc., highlighting China's innovative achievements in deep-sea technology. (Xinhua/Pu Xiaoxu)

This photo taken on Oct. 29, 2025 shows a smart unmanned cruising device for cleaning surface ocean waters at the Deep-Sea Advanced Technology &Equipment Achievement Exhibition in Sanya, south China's Hainan Province. The exhibition, which took place here from Oct. 28 to 30, featured a total of 123 exhibits including deep-sea operation equipment, unmanned vehicles, communication and navigation devices, sensors, etc., highlighting China's innovative achievements in deep-sea technology. (Xinhua/Pu Xiaoxu)