I am in Jabu-Jabu's belly and I have already gotten the boomerang so can..

Now that you have the Boomerang, leave the room, go put Ruto on the other Blue Switch, enter the door and take down the Parasitic Tentacle with your Boomerang to get the Map. Now the Red Tentacle from the hallway in the last room will be gone, so go that way and destroy the Bubbles in less than 40 seconds to get the Compass.

Go to the other room with the Parasitic Tentacle and destroy it to get rid of the blocking Blue Tentacle in the hallway. Go through that hallway and destroy the last Parasitic Tentacle to get rid of the Green Tentacle that was in the room with all the sinking holes. Now, go back to that room with the holes and go down the one where the Green Tentacle was (the one in at the end of the room on the right), but don�t forget Ruto!

Once you land, go through the door and you'll see Zora's Sapphire - you can't get it yourself, so just toss Ruto up there to get rid of her. Now you'll fight a mini boss - if you�re still stuck after this, just lemme know...

To get out you must get Princess Ruto to her mothers stone which is the spiritual stone you are looking for. First now that you have the boomerang place ruto on the switch that opens a door leading to a red tail. Kill the red tail and leave the room go to the far right side of the hall way and navi will say that the red tail is gone go in the room and destroy this tail as well. After it is killed go to the part of the hall way that is the long part shown on your map. Go in and kill the green tail. Then go and recollect Princess ruto and drop down the hole where the green shocking thing once was (If you want kill the two skulltulas lurking on the right wall) go through the door to find the stone throw Ruto onto the platform. A cutscene will ensue showing ruto getting taken up by the platform and bringing down a big octorok. Kill it by hitting it with a boomerang to stun it then hit it from behind. The stun lasts only mometary so be quick. Just keep running until you catch up with it then hit it with the boomerang. After this go up on the platform break the pots get some fairies and leave through the hallway behind you (dont go back down the platform). Go through the next room it should contain two wiggly red things and 1 octorok (one that spits rocks) kill the octorok and hit the two red things with you're boomerang to make them into temporary platforms. In the next room jump onto the platform on the right side of the wall it should lead you down to a door with a switch grab a box on the left side of the room and place it on the switch to open the door. In this room there should be lots of jellyfish kill them and go to the large pillar in the room and go to the left side of it kill the gold skulltula and climb up the vines. At the top lock on to the switch and get some distace just enough to throw you're boomerang with out hitting anything but the switch. This opens the boss room. To get rid of the boss attack the things attaching it to the ceiling with you're boomerang (watch out for it's electic beam) after it is cut loose it starts spining with large jellyfish attached to it by electical beams. Try to land a direct hit on the weak area in the middle of the body after it is hit kill the jellyfish with you're boomerang until they are all gone after they are dead attack the weak skin part of the body. Another set of Jellyfish will become attached get rid of them the same way as the others. Then land a blow with your boomerang and attack the body until it goes under until the head only remains at this point lock on to it and circle around it until it starts spinning and attack it again do this three times and it should die. Collect your heart container and go to the warp and you are done with this level.

That's because there is a boss in jabu-jabu's belly and you have to defeat it. just take the zora thing with you to the boss and she should get captured. Sorry to say i cant tell you where the boss is because i havnt played the game in years... if you need help with the boss ill try to tell you all i can remember from it. You need the boomerang and sling shot (i think) im posative about the boomerang but not posative about the sling shot. hope i helped.