After the Tide Went Out, the Beastmen Discovered That I Was the God of the Sea

Good news: The tide went out and I didn't die. Bad news: The tide has permanently receded, and the whole family is without water or food, all thanks to me. I, a marine geology researcher, was forced to lead a group of primitive marine tribes to survive in the apocalypse - building distillers, finding fresh water sources, predicting tsunamis, and by the way, Wen Che, the orca beastman who wanted to bite me to death, developed into a temporary teammate. Then I discovered that the "Poseidon Tide Bead" that the whole clan was fighting for was actually made of female flesh and blood. The original owner stole it because the next sacrifice was herself. The shark king pretended to be confused and planned to use the water source as a bargaining chip to force everyone to kneel down. And I, an unlucky guy who read books, decided to rebel by building a ship from a whale bone. Don't ask why. If you ask me, I am a geologist, and I am best at uncovering all the rubbish buried underneath.