Oh, I've got some great information, small fry! Lucky you! If you use the treasure that's hidden on that island there, the thing that vanishes as soon as you get near it... It won't vanish anymore! You know...IT! I'm talking about IT! That thing that appears on nights when a wee bit of the right half of the moon is missing! Don't you know what I'm talking about?! IT!
Diamond Steppe Island
Mr. Fairy! Do you believe in ghosts? Like the spooky Ghost Ship that sails at night? Me, I believe in fairies, but I don't believe in ghosts. Because they're scary.
On this island, Link must use the Hookshot to reach the top of the island and enter a maze with many Warp Jars. The reward there is the Ghost Ship Chart, which marks the island appearances of the Ghost Ship on certain moon phases. After obtaining the Ghost Ship Chart, a glowing ship symbol will appear at night on the Sea Chart. Coincidentally, the island itself is one of the seven recurring destinations of the Ghost Ship.