This small, heart-shaped island has a Great Fairy. Use the Skull Hammer to enter the Fairy Fountain inside the large conch shell.
Blue ChuChu
Defeat the Blue ChuChu near the eastern palm tree for a Blue Chu Jelly.
Sea Platforms
Sail to the pair of Sea Platforms. Destroy all the cannons on the only Sea Platform that has them to reveal a chest. Climb that Sea Platform’s ladder and open the chest for a minor reward. Direct the wind west with the “Wind’s Requiem” and use the Deku Leaf to glide to the second Sea Platform. Defeat the enemies there to reveal a chest, which also contains a minor reward.
Arrow Upgrade (via Great Fairy #8)
Use the Skull Hammer to pound down three nearby pegs and remove a wall of thorns blocking the way into the large conch shell. Drop into the hole inside the shell to enter a Fairy Fountain with a Great Fairy. This Great Fairy upgrades your arrow-carrying capacity and invites you to return any time to replenish your Life Gauge.
Piece of Heart #41 (via Treasure Chart #5)
Find and open Treasure Chart #5 (which is found inside the Wind Temple dungeon at Gale Isle [D1]) to pull a chest from the Great Sea near Thorned Fairy Island. The chest contains Piece of Heart #41.