Many islands fairly spread apart. Takes a boat. No mainland in sight. This is great for a survival island map. There are two islands within spawn distance- The one you spawn on and another island across the ocean. Both of these islands consist of a single tree. There are plenty more islands out there, and I am pretty sure mainland is not nearby. If you can find mainland, comment the coordinates and I will see to it. But eh, finding the mainland is just another challenge.
Minecraft 1.0.0 Seed