Chinese submersibles explore S. China Sea

The Chinese-developed underwater robot Tansuo is put down into the sea aboard Chinese research vessel "Kexue", in the South China Sea, July 26, 2017. The Chinese-developed underwater robot Tansuo had collaborative underwater operations with the unmanned submersible Faxian in the South China Sea on Wednesday.It is the first time that the two types of submersible have performed simultaneous underwater explorations. (Xinhua/Zhang Xudong)