A bathyscaphe is a free-diving self-propelled deep-sea submersible, consisting of a crew cabin similar to a bathysphere, but suspended below a float rather than from a surface cable, as in the classic bathysphere design. Bathyscaphe is designed by Swiss-born professor Auguste Piccard for exploring the ocean depths.1 We were told that human life has a close relationship with water, under the curiosity of whether could human return to water. In the 1960s, pioneering missions were taking place in order to explore the “underwater fantasy”. They were facing the challenge of adapting their body to an aggressive environment, therefore, scientists were dedicated to finding ways to build up an envelope which can help people stay underwater as long as possible, in the meantime, as comfortable as possible. In the following years, scientists have come up with systematic scientific innovations, with a deeper distance a bathyscaphe went down, internally, the equipment became more “complete”. It seems the return to water is so promising, such as the inventor of bathyscaphe said: “During the past ten years so, most governments have come to realized the importance of oceanography; moreover, most oceanographers are convinced that many observations and measurement can be really accurate and reliable only if they are made deep in the ocean instead of, as in classical times, ‘up there’”.2 With the knowledge of these early practices, Conshelf I and II attempted to create human colonies at depths that were never reached before, although Conshelf series was not successful, the bathyscaphe was a good start.