Photo taken on Dec. 5, 2017 shows penguins in the ocean surrounding Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Dec. 9, 2017 shows a penguin at Inexpressible Island in Terra Nova Bay of the Ross Sea in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Dec. 9, 2017 shows a penguin at Inexpressible Island in Terra Nova Bay of the Ross Sea in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Dec. 28, 2017 shows a penguin walking past icebreaker Xuelong near China-built Zhongshan Station in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Dec. 7, 2017 shows a seal at Inexpressible Island in Terra Nova Bay of the Ross Sea in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Wang Yuanwei)
Photo taken on Jan. 2, 2018 shows penguins near China-built Zhongshan station in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Dec. 28, 2017 shows a seal drawing near as the icebreaker unloads the cargo on sea ice near China-built Zhongshan Station in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Jan. 2, 2018 shows a seal near China-built Zhongshan station in Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)
Photo taken on Dec. 5, 2017 shows a humpback in the ocean surrounding the Antarctica. China's research icebreaker Xuelong, or Snow Dragon, set sail from Shanghai, east China, on Nov. 8, beginning the country's 34th Antarctic expedition. (Xinhua/Bai Guolong)