4008382437306357996Minecraft 1.4 - 1.4.2 Seed
[[WARNING! LARGE BIOMES ONLY!]]
This world spawns you in an Ocean Biome,
Seed Code: 4008382437306357996
X: 511 / Y: 0 / Z: 343
The main island you spawn on, has a tunnel cave that goes under and back up, it has 3 trees, 5 blocks of sugar cane, some yellow flowers, and some interesting formations on the other side from where you spawn. Also, there's a strange floating piece of rock between the second and the first islands.
X: 455 / Y: 0 / Z: 364
The second island, it is nothing special except that it has a hole in the middle of the island.
X: 427 / Y: 0 / Z: 267
The third island, nothing special except a cave opening and a strange hole in the ocean's floor.