Doctor of Environment, China Ocean University. Compared with the 985 school, China Ocean University's Ph.D. in Environment is easier to take. China Ocean University's doctoral theses on environment are all written by the school itself. If you are interested in signing up for the doctoral entrance examination for environment in Ocean University, you need to contact the target tutor in advance. If the other party agrees to guide you, you will give some constructive suggestions and list some reference materials needed for the exam. The passing rate is particularly high, so it is easy for China Ocean University to get a doctorate in environmental science.