The Wind Waker Bottles
As in many previous Legend of Zelda games, The Wind Waker has many Bottles that can be found across the Great Sea. Below is a listing of all four bottles' locations as well as how to obtain them. Listed further down as well is the variety of contents that can be placed into bottles, ranging from Potions to Forest Fireflies.
Bottles
Bottle #1
Location: Dragon Roost Island
After Link reaches Dragon Roost Island (F2) for the first time, head into the main living area as the storyline intends. Speak with the Rito inside and they will tell Link to meet a girl named Medli. Speak to her in the first upper room, and she will ask Link for help. Head back down the ramp and enter outside into a large circular area that is covered in dust particles. Continue to the left and down into the pit to find Medli once again. Speak with her, and she will ask Link to help her get onto the ledge on the far side of the area. Link can then pick her up and walk onto a higher rock nearby. When the wind faces the opposite side, Link can throw her with A and she will land there. She will talk to Link once more, and give him the first Bottle. This is the only bottle that must be obtained in the game.
Bottle #2
Location: Bomb Island
After obtaining the ability to sail anywhere on the Great Sea, head over to Bomb Island (F5). Link will need to find Old Man Ho Ho, and look where he is looking with his telescope. For this instance of Ho Ho, Link will see a Submarine in the distance. Link can then sail over there and defeat the enemies inside to receive the second Bottle.
Bottle #3
Location: Rock Spire Isle
After obtaining the ability to sail anywhere on the Great Sea, head over to Rock Spire Isle (B3). Beedle operates a special type of ship that sails around this isle known as the Rock Spire Shop Ship. It sells special items that aren't available elsewhere, including the third Bottle. The Bottle costs 500 rupees to purchase.
Bottle #4
Location: Windfall Island
After defeating the Helmaroc King at the Forsaken Fortress, head to Windfall Island (D2) at night. There is a poor girl named Mila and she will tell Link to go away. Head to the stairs nearby and she'll run away. Follow her, but don't get too close or she will see Link when she turns around. When she gets to Zunari's safe, talk to her. Select the first option for every question asked, and she will give Link the fourth and final Bottle.