An expedition team member processes water samples aboard China's polar icebreaker Xuelong 2, Jan. 7, 2020. Members of China's 36th Antarctic expedition team completed the data collection of conductivity, temperature and depth (CTD) in the Cosmonauts Sea on Tuesday.

Aerial photo taken on Jan. 7, 2020 shows China's polar icebreaker Xuelong 2 in the Cosmonauts Sea. Members of China's 36th Antarctic expedition team completed the data collection of conductivity, temperature and depth (CTD) in the Cosmonauts Sea on Tuesday. (Photos: Xinhua/Liu Shiping)

Expedition team members pose for a group photo after work aboard China's polar icebreaker Xuelong 2, Jan. 7, 2020. Members of China's 36th Antarctic expedition team completed the data collection of conductivity, temperature and depth (CTD) in the Cosmonauts Sea on Tuesday.

Expedition team members process water samples aboard China's polar icebreaker Xuelong 2, Jan. 7, 2020. Members of China's 36th Antarctic expedition team completed the data collection of conductivity, temperature and depth (CTD) in the Cosmonauts Sea on Tuesday.