However, the Marsh Badge doesn't directly unlock any specific features or areas in the game. Its main purpose is to:
* Increase the power of Water-type moves. This makes your Water-type Pokemon more powerful against trainers and other Pokemon.
* Disable your opponent's Water-type moves. While this is only relevant for the specific Gym battle, it gives you an advantage in subsequent battles.
Essentially, the Marsh Badge gives you a significant tactical advantage, especially when battling other trainers. It's a valuable tool for progressing through the game and ultimately becoming the Pokemon champion.