Aquarium.zip is a release file of the Minecraft map Aquarium-Shader, made for Minecraft 1.21.3. It was published on December 1, 2024 and is 10.3 MB in size. For the full description, screenshots and every other version, visit the Aquarium-Shader map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.