Eye Reefs

The Eye Reefs are minor islands in that are located on various areas of the Great Sea and are uninhabited by civilizations, but guard Treasure Charts leading to Special Charts. Each reef has a set of wall-mounted cannons that can be destroyed with Link's own Cannon. When all of the cannons are destroyed, a Treasure Chest containing a Treasure Chart will appear on one of the large structures. Link must then fly using the Deku Leaf to reach the chest.

None of the reefs' Warships and cannons appear until Link defeats Helmaroc King in Forsaken Fortress. The Eye Reefs, in particular the Three-Eye Reef, appear to be inspired by the Three-Eye Rock from.

Cyclops Reef
Cyclops Reef is a square reef located west from the Tower of the Gods. It has one round reef in the center, resembling a six-sided die, hence the name. Link must destroy all the gun turrets in this reef to obtain a Treasure Chart which reveals where to find the Light Ring Chart. Surprisingly, the chart's treasure is in this very place (although Link needs to open the chart first to collect the treasure). The coordinates of this reef are D3, and it is a neighbor of Six-Eye Reef.

Two-Eye Reef
Located east from Headstone Island, the Two-Eye Reef features two round reefs in the center, resembling one side of a six-sided die. If all the gun boats and gun turrets are destroyed, a Treasure Chart that leads to the Secret Cave Chart will appear. The coordinates of this reef are G4.

A Great Fairy ( violet colored ) can be found on the outskirts of the reef. A projectile is used to kill the Big Octo. Once the Octo is vanquished, the Great Fairy will appear, thanking Link by doubling his Magic Meter.

Once Link has the proper Triforce Chart, he will be able to retrieve a Triforce Shard from the bottom of the sea.

Three-Eye Reef
The Three-Eye Reef is yet another reef of the Great Sea, and is found west from Greatfish Isle. It is a large square reef with three round reefs in the center, resembling a face of a six-sided die. Link must destroy all the gunboats and wall-mounted cannons to obtain Treasure Chart #32. The coordinates of this reef are D1.

A Piece of Heart can also be pulled from the bottom of the sea by using one of the Treasure Charts from Zunari's night auction on Windfall Island.

Four-Eye Reef
Located south from Forsaken Fortress, the Four-Eye Reef is a large square reef with four round reefs within it, resembling a six-sided die. Once Link defeats all the gun turrets, he will receive Treasure Chart #19. The Great Fairy Chart can also be retrieved here by using the Treasure Chart found in the Five-Eye Reef. This reef's coordinates are B1, and it is directly south of the Forsaken Fortress.

Five-Eye Reef
The Five-Eye Reef, located north from Outset Island, is a square reef with five smaller circular reefs within it, resembling a six-sided die. Link must destroy all the turrets here to receive Treasure Chart #41. A treasure chest containing 200 Rupees can also be found by using one of the Treasure Charts received in the Earth Temple. This reef's coordinates are F2.

Six-Eye Reef
Located at the very center of the Great Sea, the Six-Eye Reef consists of one large square reef and six smaller circular reefs within it, resembling a six-sided die. Eliminating all the gun turrets will make a Treasure Chart appear, which ultimately leads to the Octo Chart. The coordinates of this reef are D4, directly to the east of Cyclops Reef. A submarine can be visited in the vicine waters, Link finds there a Piece of Heart after defeating three Moblins.