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Puplantis is the main setting in "Sea Patrol: Pups Save Puplantis". It also was seen in "PAW Patrol Original 5s: Charged Up: Pups Save a Super-Powered Puplantis". It is inhabited by mer-pups, including Mama mer-pup and her baby. Without its pearls, Puplantis would completely crumble. Its name is a reflection on the legendary fictional city of Atlantis. It is visited by the PAW Patrol and Cap'n Turbot. So far, it has only two known enemies, Sid Swashbuckle and Arrby, who tried to take possession of the main pearl of Puplantis, and in the end almost destroyed it.
This location is also featured as the main location in the Aqua Pups sub-series with its first appearance in "Aqua Pups: Pups Save a Floating Castle" and later appearances within the named sub-series. Also, it introduced a new villain named Moby and his sidekick McSquidly as they try to stop all the mer-pups celebrations in Puplantis.