Also, use the ice rod against the boss; it takes two hits to kill one with that. Just in case you're wondering where that is, it's in the swamp just south of the first palace. To get there: Go through the swamp south of Link's house, and head southeast to find a sandy path at the bottom. Take that path east, past octoroks, crabs, and zoras. At the end of the path, you should end up at a cliff wall with one door and a crack in the wall next to it. Bomb open the crack, walk along this passage, and open the chest containing the ice rod.