Aquanaut's Holiday (Japanese: アクアノートの休日, Hepburn: Aquanaut no Kyuujitsu) is a video game for the PlayStation developed by Artdink. The game is an underwater simulation in which the player assumes the role of an overworked marine explorer who returns to the water for pleasure after having brought harmony to the world's oceans. Aquanaut's Holiday was followed by a few Japan-exclusive sequels on various PlayStation consoles.