How do you get dragon scale in mt mortar?

In Pokémon games, to obtain Dragon Scale in Mt. Mortar, you typically need to defeat or capture specific Pokémon that may hold it, such as Seadra or Horsea. Additionally, you can find Dragon Scale in certain locations within Mt. Mortar, often hidden in items or on the ground. Make sure to explore thoroughly, check for hidden items, and battle Pokémon that are known to hold this item.