Photo taken on Jan. 1, 2020 shows fish samples obtained by China's 36th Antarctic expedition team aboard China's polar icebreaker Xuelong 2, or Snow Dragon 2, from the Cosmonauts Sea. (Xinhua/Liu Shiping)

Members of China's 36th Antarctic expedition team collect fish samples aboard China's polar icebreaker Xuelong 2, or Snow Dragon 2, Jan. 1, 2020. (Xinhua/Liu Shiping)

Members of China's 36th Antarctic expedition team collect fish samples aboard China's polar icebreaker Xuelong 2, or Snow Dragon 2, Jan. 1, 2020. (Xinhua/Liu Shiping)

Zhang Jie, a member of China's 36th Antarctic expedition team, deals with fish samples aboard China's polar icebreaker Xuelong 2, or Snow Dragon 2, Jan. 1, 2020. (Xinhua/Liu Shiping)

Aerial photo taken on Jan. 1, 2020 shows China's polar icebreaker Xuelong 2, or Snow Dragon 2, sailing in the Cosmonauts Sea. (Xinhua/Liu Shiping)

Photo taken on Jan. 1, 2020 shows fish samples obtained by China's 36th Antarctic expedition team aboard China's polar icebreaker Xuelong 2, or Snow Dragon 2, from the Cosmonauts Sea. (Xinhua/Liu Shiping)