Water Retention

If we keep polluting the ocean we will kill All of the fish in the ocean. Sadly that means we run out of fish. Our ocean will die, we are hurting our planet if we keep Polluting are ocean. Humans and the animals well not have good drinking water. The piranha will have to adapt to the water and get Legs then it will go on land but do have to hold their breath because there fish but they will eat land animals that are small.