my mind was racing , and i tried to calm down . they were the ones who took humans to the tunnels . i am ready to put the men back to work . `` that was n't quite what i had in mind when i made the suggestion . imagine how many people lived on the coast then , when fish were the most reliable source of food and the seas were the easiest method of trade . the flow of water returns to normal . well , he said nervously , that would be ridiculous , right ? 