Pilot Tang Jialing(L) and test pilot(R) Zhang Dongsheng are working in Jiaolong submersible.
Pilot Tang Jialing collects sediment sample with mechanical hands.
Jiaolong submersible is hung up by mechanics.
Jiaolong submersible is put into sea.
China's manned deep-sea submersible, the Jiaolong, reached a depth of 6,965 meters below sea level on Tuesday during its second dive into the Mariana Trench.
Pilot Tang Jialing worked in the submersible for three hours, collecting samples of sea water and sediment.