The entire world had become an ocean, leaving humanity with nothing but scattered islands and man-made floating islands.
But for humanity, the vast World Sea was not all the same.
The waters that had once been land were where the survivors were most active. These were the seas they knew best.
These areas were generally tens to two thousand meters deep and were considered "shallow seas."
The areas that had always been ocean, however, were considered perilous journeys—the true deep sea.
These regions were all over two thousand meters deep. Four to five thousand meters was standard, and many areas plunged as deep as ten thousand meters.
Many giant Sea Beasts, including the World Beast, lived in these deep-sea regions, their existence far surpassing human imagination.
