Well, you can enter the river by a path from Hyrule field. Kaepora Gaebora will talk to you. Find a low ledge along the river, by the gate blocking your path, and then take the nearby chicken and glide over. Continue up the river, and you will eventully find a waterfall. Play Zelda's Lullaby, and enter the waterfall. There, you are now in Zora's Domain.
it is in the ice cavern in zoras domain
do you know where the river is in hyrule feild? well go near the end of it and there is a cave, go in it but your not there yet. then follow the zora river until you get to the big triforce in front of the water fall. get on it and play the song "zelda's lullaby" on your ocarina. then a secret passage will open, go in the passage and your in the zora's domain!
You have to get princess ruto's message from lake hylia and show it to king zora and he will move.
The Third Sage is Princess Ruto of the Zoras, the Sage of Water, who you rescue from the Water Temple.
Most of them are in the water in Zora's Domain. But seven years later they're under the ice in Zora's Domain.
The seventh sage is actually Princess Zelda. She is the Sage of Time.
By seeds, I think you mean the Magic Beans. The Magic Beans are sold by the fat giant guy in Zoras River. Here is a picture of him if you can't find him: Source Each time you buy one, he raises the price by 10 rupees, insisting that 'its getting really popular...'
At least to my knowledge, the Zoras have always been a peaceful race. They, like the Gorons and Kokiri, are denizens of Hyrule and serve the royal family loyally. They are treated as equals (or, at least, not treated as inferior) in the Hyrulian society, and therefore have no reason to be unfriendly.
you need a scale from the zoras. there is a game where you have find all the ruppees that a zora drops in a time limit and if you win the prize is a zora scale. i think it goes for 5 seconds
go to base and get giant stone and warp it to the top of the river
first go to the ice cavern then get the blue fire with a jar then go to the Zora's shop and pour it on the front and there you have open it.
to find the octopus thingy[Bigocto] in ocarina of time you have to go inside jabu-jabus belly and defeat the green tentacle then go to the holes at the beggining of jabu-jabus belly and fall through the hole where the other green tentacle used to be and then princess ruto gets the zoras sapphire then you fight the octopus thingy[Bigocto.].