Who do you use surf in mt mortar?

In Pokémon games, Surf is often used in areas like Mt. Mortar to traverse water obstacles and access hidden areas. To use Surf, you must have a Pokémon that knows the move and you need the appropriate badge to use it outside of battle. In Mt. Mortar, players can find items, trainers, and potentially new Pokémon by exploring the water routes. This move adds an element of exploration and strategy to the gameplay.