When you get near this island, the immense heat of the volcano causes you to take damage. This island is entirely inaccessible until you obtain the Fire and Ice Arrows. So make a mental note to come back here later.
Eastern Triangle Island
There isn’t much here. There is some grass and stuff on the island you can cut for hearts/etc. You’ll come back here later thouugh.
This island, too, is rather useless. I’ve never really remembered to go back here, but I think you (obviously) need Bombs to access anything here. sighs
However, there is one good thing here. West (?) of the island is a submarine. If you enter it and defeat the enemies located there, you’ll obtain an Empty Bottle !
Whenever you’re ready, sail south to Forest Haven .