Alien Survival and Diving into the Abyss

He came to an alien planet inexplicably, a planet that was almost entirely covered with sea water, and was forced to start a life of survival in a submarine. During the journey, he discovered that he was not the only one from the Aqua Blue Star, but he encountered dangerous seas, strange marine creatures, and various local mysterious organizations, until he faced his final fear! That's it! I don't know how to write an introduction, and this article is not considered a brainless and refreshing article. It may not be suitable for those who want to be brainless and refreshing! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.