Zora's Domain
The first thing to do here is get an empty bottle and find the little
fish floating around in the shallows near a circle of stones. Use the
bottle to catch one of the fish. You'll need it later. Now head up to
the top of the mountain in the middle of the domain and you'll see King
Zora. Before doing anything else, take this opportunity to use one of
his torches to light a Deku stick and quickly run and light all the
other torches in the domain, including
two hidden behind a waterfall. This opens a few things up for you, like
a heart container piece. Go back to the King's room and talk to him,
then head left from his room and find the diving game. Win at the
diving game and you'll get the Silver Scale, which allows you to
dive deeper. Now look for an underwater doorway at
the front of the mountain. Dive down and go through it and you'll pop up
at lake Hylia. Swim forward a bit and you should notice a bottle at the
bottom of the lake. Dive down and fetch it. Then swim back through the
tunnel to Zora's Domain. Bring the bottle to King Zora and show it to
him (press C when Z Targeting him) and he'll take the note
out and move out of your way. Now take the right path to get behind him
and enter Zora's Fountain.
