Deep Sea Survival: My Sea Boat Can Be Upgraded

When I woke up, billions of people around the world were scattered on the bottom of the deep sea. Everyone is trapped in a small sea boat. There are only 50 rounds of deep-sea rubber bullets left, and less than 12 hours of oxygen use! There is cold water all around. From time to time, various mutated deep-sea behemoths swim past. Deep-sea golden electric eels, deep-sea man-eating sharks, giant squids, giant sea snakes, ancient sea dinosaurs, and unknown terrifying sea beasts... Falling into such a desperate situation, Jiang Yang could remain calm and composed. Because he discovered that his sea boat could absorb various resources in the ocean to upgrade! You kill a sea clam and get a pearl, a bottle of oxygen and a piece of clam meat. You kill a deep-sea golden electric eel and get a ball of plasma! You use iron ore*1+deep sea rubber bullet*20, synthetic alloy rubber bullet*20! Note... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.