Another 0.9+ see where you spawn on an island. If you tunnel straight down from spawn (after cutting yourself down from the tree you spawned on top of) you’ll fall into an abandoned mine shaft. Explore around and you’ll find plenty of ore.
Up on land the closest neighboring island has a roofed forest biome – plenty of trees for tools and torches there! It’s just a quick swim across the water. Poking around that island you’ll notice some of the huge mushrooms you’ve heard of, too. Come to think of it, you’ll probably want to swim across and get some wood and supplies before digging down into the mine shaft so you can get out. Have fun!
Minecraft PE 0.9.0+ Seed: 3602383
Thanks to AwesomeTNT for sharing this seed!