Post-Temple Actions
Finishing the Great Bay Temple won’t open a whole lot of options for you, but there are still a couple things to do now that the temple’s over. Now that Lulu’s voice is fixed, you can find the Indigo-Go’s in full form on-stage in Zora Hall. You can put on your Zora Mask and play with them for a special cutscene; listen to Lulu sing and see what all your hard work has brought.
To continue into Ikana Canyon, you have to have the Garu Mask from the Romani’s Ranch subquest. So really, if you haven’t done it yet, you now have to do it to move on. Quit draggin’ your feet! Cows and thirsty Milk Bar patrons are depending on you!
Otherwise, some important things to take care of can be found in Ikana Graveyard. At the very back of the graveyard, you can find an exceptionally large skeleton lying under a bridge; the sign nearby will mention that he is sleeping, so play the Sonata of Awakening to rouse his lazy bones. He will challenge you to a race; defeat him with your sword during and you can get the Captain’s Hat as a reward. If you have the Bunny Hood, it will make the race much easier, but you don’t need it to win if you’re good enough at killing the Stalchildren.
Using the Captain’s Hat, you can now talk to the Stalchildren that were hanging around the first section of the Graveyard. If you’re not on the First Day, warp back in time and talk to the Stalchildren circling a grave. Ask them to open it and the resulting hole will lead you to a small underground section. In it you find a room full of Keese, and beyond that a room with an Iron Knuckle. Dust both of them and you will earn the Song of Storms, which will be necessary to reviving the dead Ikana Canyon.