Pond Island

The Pond Island item creates an Island covered with Sand, water, Prismarine, Prismarine Bricks, and Dark Prismarine with stone underneath. It also contains a Fishing Crystal, which grants a chance of fishing Prismarine Shards and Prismarine Crystals in nearby water, with an effective diameter of 15. The pond island has water in it.

Crafting
It can be crafted when the player reaches Raw Fish IV. Unlike crafting a cake, the buckets themselves will be consumed as well.
 * 3x 5 Sand
 * 3x 5 Prismarine
 * 3x Water Bucket

Island Contents
This item used to be used for getting the sand collection along with the Desert Island. However, as of update 0.11.4, sand can now be mined in the mushroom desert.