Walkthrough:The Legend of Zelda: The Wind Waker/Portal-Kombat/Part IV

A Visit to Pawprint Isle
Although your destination is marked out on the Sea Chart, there is an island along the way that you can stop at, and there are a couple of things you can do in the waters around it as well. This is Pawprint Isle, an atoll famous for its ChuChu population. Before you set foot on the island, talk to the group of divers who search for treasure around here. This is the Salvage Corp. and they'll hand you  Treasure Chart #34 (3/41)  if you talk to their leader. He's the one who sits apart from the other three. On Pawprint Isle, there are a couple of things you can do for now. Use jump attacks with your sword to get on top of the small rock heads on this island. The smaller one will reveal a few Rupees, and the other one will reveal a rare Blue ChuChu enemy! As soon as you see its blue form appear, target it and slice it twice to kill it! Otherwise, it will become electrified (takes 1/2 of a heart if you're hit) and you'll only be able to defeat it by lobbing rocks at it, if there are any to be found. For defeating it, you get the special Blue Chu Jelly for your Spoils Bag! Once a Blue ChuChu drops this, it will never drop a bit of it again. You'll have to find a different one to get more jelly. There's something special once you get 15 drops, but that will take some time. Cut some of the grass around the big white dome and you'll find a crawlspace that leads into the dome. Inside, there's a hole for you to drop down. It leads to a winding cavern of grass. You'll encounter seven Red ChuChus as you progress, easy enemies that only do 1/4 of a heart worth of damage. It takes but a single hit to defeat one. Clear them out of the way and they may leave behind Red Chu Jelly, a common form of Chu Jelly. At the end of the path you can open the treasure chest for  Piece of Heart #4 ! You now have  4 Hearts ! Leave the cave and sail away from the island. Be sure to stop at the sea platform to the north. Climb up the ladder and defeat the Pink Bokoblins there to get a treasure chest with a Red Rupee. If you're running low on bait for some weird reason, stop by Beedle's Shop Ship as well before moving on to your next destination.