Maritime science fiction

Maritime science fiction is a subgenre of science fiction that is set in a maritime environment such as a lake, an island, an ocean or a coast and usually features futuristic maritime technology and fictional marine life forms such as seamonsters.
The best known and earliest work of maritime science fiction is "20,000 Leagues Under the Sea".
Film and television.
Among well known maritime science fiction films are the films "The Abyss", "Leviathan" and the film adaptations of "20,000 Leagues Under the Sea". A classic television show and cinematic film of the maritime science fiction subgenre is "Voyage to the Bottom of the Sea". Later maritime science fiction TV shows include "SeaQuest".