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Sea of Wailord (Japanese: ホエルオーのうみ Sea of Whaloh) is a location in Pokémon Ranger: Shadows of Almia.
An old Altru Inc. oil rig has polluted the Sea of Wailord with scrap metal and various other pieces of junk, further complicating navigation of its waters. Surprisingly, many Pokémon still manage to live here despite these conditions. Team Dim Sun placed beam generators that captured a Wailord here, which they wanted to use to replace the cargo ship that the player broke down before. After the player blew their plans, they take the Wailmer, being the kid of the Wailord, after which the Wailord becomes so agitated that it takes the player to the oil field hideout, where the player has to free the Wailmer. The beam generators that imprison the Wailord require a level 3 Crush target clear.