Big Blue

Big Blue is a fictional planet found in the F-Zero series that is mainly (about 99%) covered by water. The buildings and often times F-Zero tracks have obviously been built above the water, though sometimes you'll see both the buildings and track go through underwater tunnels and what not.

Still, because of the great difficulty of building anything on the planet, there are few buildings found. Still, it's bueaty makes it a popular destination - Especially for F-Zero grand prix races.

However, rectently the planet has become more popular and now features hotels, industrial buildings, and so on, as well as the always popular grand prix tracks. Life can apparently be sustained underwater, as colossal fish can be swimming under there, even while racing in the transparent tunnels.