The Big O - Season 1 Episode 7 The Call from the Past
Overview: Episode begins, Roger and Angel are trapped in a building buried under the sea, one of a string apparently created by the Event. Three days earlier, Roger is trying to negotiate to bring down the price of fish for the people outside the domes. He learns that the reason fish is so expensive is because the fishermen won't go out to fish because they are scared of a sea titan in the water.