Chinese scientists from Zhejiang in eastern China developed a soft fish inspired by nature to study the deep waters of the ocean. The robot fish uses its fins in the Mariana Trench which stretches 10,900 meters below sea level. The bionic smart fish has a length of 22 and a wingspan of 28 centimeters which is roughly the size of an A4 paper. Professor Li Tiefang at Zhejiang University said that the robot fish is modelled after the snailfish that lives in the deep ocean trench, and it can withstand the high hydrostatic pressure of the hole.