This seed has three islands.
Spawn Island: This one is the largest of them, but it doesn't have much on it, there is only a small water pool.
Second Island: This island is the second largest, it has two trees and a cave that doesn't go that deep into the ground, but it has some water in it.
Third Island: This is the smallest, it has virtually nothing on it.
Seed Code: 488623678
More Minecraft 1.11 Seeds