Allows the player to fish in piles of rocks at the bottom of water. When fishing, the player may find a Pokémon, and item, or nothing. The player can fish while standing on land or while riding Lapras Surf; they cannot fish from Sharpedo Jet.
In each area that has fishing spots, at least one of the rock piles has bubbles seeping from it to the surface; if the player fishes at this spot while bubbles are emerging from it, they are more likely to encounter Pokémon that are normally rare to find in fishing spots in that area. As soon as the player reels in their line after they find any Pokémon or item from a bubbling spot, the bubbles will disappear until the player re-enters the area. The bubbles also disappear if the player moves too quickly near the spot, if they move over it, or if they reel in their rod too early. If the bubbles are not present, the fishing spot functions the same as all other fishing spots in the area.