When you stare into the abyss, the abyss is also staring at you. Our understanding of the deep sea is far less than that of the moon. On the surface, it is because of the strong water pressure that is difficult to deal with and cannot be avoided. Perhaps the real The deep-seated reason comes from human beings' instinctive fear of the dark abyss. Have you ever heard of a blue hole? Have you ever seen a knife-toothed shark that is only one foot long but can scare even a whale? It is as ugly as an alien creature , What about the bobbit worm, a vicious creature? There are also giant groupers that like to attack people, will-o'-the-wisp jellyfish, giant mantis shrimp, underwater ancient ruins, transnational maritime criminal organizations, the most mysterious lake in the world, and the underground left over from the Cretaceous The sea, the underwater Dragon Palace in the Beibu Bay... If you have a curious and adventurous heart, let the protagonist Ling Hao take you into a blue, deep and mysterious world to explore.