Aqua-World: Umi Monogatari is a fish tank simulator for the Sega Saturn. The game focuses on marine life in the sea. The player can access three different segments: - Data Fish: Shows photos, facts and 3D models of fish and sea mammals. - Mermaid: The player can simulate the life of a marine animal in an ocean environment or aquarium. - Electric Blue: There are several interactive cinematic sequences of sea creatures swimming in the ocean.