Electrocute him.
Yes. He is the mini boss in the water temple.
If you want to find the BOSS for the Lakebed Temple on Twilight Princess, you have to get the BIG KEY and then go to the room with the giant swiveling staircase, and just jump into the water. The BOSS DOOR is level with the water surface under the swiveling staircase. This BOSS is the coolest one so far. -Caveman1593
Defeat the water temple boss ("dark link) and the curse will be lifted
Dark Link makes his appearance as the sub-boss of the Water Temple
You need to get to the water temple boss and defeat him. If you're stuck on how to get there, go to gamefaqs.com and look up the game you're stuck on. Go to the faqs and go on a walkthrough of the game.
The rope is in the water temple after you beat the mid boss and it actually is a whip by the way.
Dark Link. To defeat him use either the Megaton Hammer or Din's Fire.
You collect the Longshot in the room of the Water Temple after defeating the sub-boss, "Dark Link."
you have to blow to enter and for boss you have to get boss key
Beat the First Temple. Or more specificly: Get the boss key IN the first temple and travel into the boss room. If you need more help plz elaberate your question... -Crazyfairy1
Blaaz