Man-made ocean

From Wiki China org cn

On September 20, 1986, China's first man-made ocean underwent a 72-hour pressure test, making China one of the few countries in the world which had mastered man-made ocean experiments.

Man-made oceans are artificial marine environments. They provide an environment closer to nature than aquaria for marine biological and bionic researches and can produce data as reliable as the real ocean.

It took the Chinese Academy of Sciences Institute of Oceanology nine months to complete the project in collaboration with Japan's Mitsubishi Corporation. The man-made ocean consisted of 300-tons of water in a four-meter deep organic glass container which was 16 meters in diameter, five meters high and three meters wide.