2010: Moby Dick

On November 20, 1969, 50 miles off Soviet waters, the USS ''Acushnet'' dives under the ice. A young Ahab listens to sonar for enemy submarines when suddenly he detects an unknown target. When the captain listens, he hears nothing, but Ahab insists on a presence in the emptiness. The target dives into a trench, but the captain abandons his search in favor of photographing the target. The target attacks the submarine as Ahab hears a roar. The sub is brought to the icy surface, and the target identifies itself as a gigantic, white, whale-like creature. Ahab survives, but loses his left leg to the beast when it hauls the other half of the sub back underwater.