Yu You is an ordinary migrant worker who came to a big city to fight for gold. With a high school education, he can only work as a coolie. For two years, he has been doing porters and odd jobs in the seafood market. In the fish fight, Yu You got a sea turtle shell. Through practice, he gradually mastered the ability to dive into the sea, so that he can swim in the sea like a sea fish, and independently precipitate excess salt, absorb oxygen in seawater, and not fear the pressure, Influenced by natural factors such as light and sea waves. Yuyou, who has integrated the turtle shell, has the imprint of the basalt totem on his body, which produces a mysterious power called the aura of fish and dragons. This ability can not only evolve aquatic creatures, but also dive into the deep sea at will. It also contains many magical abilities. The sea is a treasure trove that human beings have been trying to explore. How will you use this opportunity to sustainably develop seabed resources? Lobsters, abalones, golden-lipped clams, tunas, small yellow croakers, deep-sea fish, and many more Treasures under the sea... Let's see how Yu You can be a professional fisherman in the metropolis, driving an ocean-going fishing boat, setting sail, and living a happy, joyful, carefree life!