Place all three of the Goddesses Pearls in the statues hands in the three triangle isles.
It's in the tower of the gods
When you get through the Tower of Gods.
Two blocks down from the Tower of the Gods.
very special....the master sword!
Below the tower of gods its underwater. A note from Kanden: you can not explore the field. just the castle. but you do get the master sword
Unless you go to the tower of gods and go to underwater hyrule there is no other way to walk under water.
Ganon's tower is in hyrule past the barrier
After you beat the Tower of the Gods, you can either do that, or you can do the earth temple. It's optional. But if you want to get past the wind, you need the iron boots.
There are a total of 49 islands on the The Legend of Zelda: The Wind Waker. Some of the islands are Seven Star Isles, Overlook Island, Crescent Moon Island, and Tower of the Gods. The complete list can be found on Zelda Wiki.
you need arrows and you get them in the temple of gods.
Cyclos is the brother of the wind god Zephos. Cyclos can be found in different places around the sea. Look for the big tornadoes/cyclones. I know there's one north of the tower of gods.
In The Legend of Zelda: The Wind Waker, you can find a tornado after playing the Earth God's Lyric on the Wind God's Aria near the Mother & Child Isles. The tornado will take you to the Tower of the Gods.