In and Around Mabe Village
1. Fishing Pond- Get the Big Fish in the Nook underneath you and inside its mouth is a Heart Piece
2. Well- Jump off the ledge in the Well just west of Mabe Village for a Heart Piece below.
3. Mysterious Woods- Outside of the Woods is a Heart Piece on a grassy platform.
4. Witch's House- Directly south of the Witch's House is a staircase. In the cave below is a Heart Piece that you'll need the Hookshot to get to.
5. Mysterious Woods- in the cave you pass through to get the Toadstool is a Heart Piece that you can get with the Power Bracelet.

Tal Tal Area
6. Water Cave- In the cave on the water right of Angler's Tunnel is a Heart Piece under water in the middle of the room.
7. Turtle Rock- As you emerge from the Turtle Rock exit by the Warp Hole is a Heart Piece.
8. En Route to Turtle Rock- when you go down the stairs past where you save Marin is a little nook at the bottom. Blow it to get Heart Piece you could see before but not reach.

In and Around Animal Village
9. Animal Village- In the small cave right of Animal Village (you can see the cracked wall from the Zora house) is a Heart Piece that you'll need the Rooster to get.
10. Yarna Desert- Bomb the North Wall of under where you fought the Sand Worm and there is a Heart Piece.

Ukuku Prarie
11. Kanalet Castle- In the southwest part of the moat is a Heart Piece accessable by diving.
12. Ukuku Prarie- There is a cave in the Prarie that had barriers that you need to dash through. Bomb the wall at the top of the cave to get into a room with a Heart Piece.