Research vessel KEXUE carries out investigation over seamounts in western Pacific Ocean(1/6)

A researcher deals with samples of sea water on China's research vessel KEXUE (Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)

Researchers deal with samples of sea water on China's research vessel KEXUE(Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)

Researchers conduct vertical trawling operation on China's research vessel KEXUE (Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)

A researcher collects samples of sea water from the CTD(Conductivity Temperature Depth) on China's research vessel KEXUE(Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)

A researcher deals with samples of sea water on China's research vessel KEXUE (Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)

Researchers recover the CTD(Conductivity Temperature Depth) on China's research vessel KEXUE (Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)