Les was building a sand castle. The wind blowing in from the Atlantic Ocean kept him cool on the sunny day. He ran to his mom for a drink of water. His mom told him that the water bottles they brought are empty. Les was very thirsty. He asked his mom if he could fill a water bottle with water from the ocean. His mom told him no. Les cannot drink the ocean water regardless of how thirsty he is. The saltwater would taste yucky; but .....