Lowers the effectiveness of Water-type moves on the user by one level for one round. One use per battle.
This blue berry is filled with hundreds of tiny air pockets that allow it to float in water. A Pokémon holding this item may consume it to reduce the effectiveness of Water-type attacks made against it by one stage for one round. (Thus, a 2× weakness to Water would become a 1.5× weakness to Water for one full round after a Passho Berry was consumed.)