Surviving under water can be a challenge just on it's own.

This world is 200 layers of water and 5 layers of sand.

Here you must survive and do so with limited building supplies - Mainly sand.

Sand and whatever will support the sand to make a structure. (i.e. ladders, signs & torches etc.)

No other blocks are provided or allowed.

Before starting, you have your pick of supplies.

On the ocean floor there's a shop to buy more, cheap.
So you'll never run out of sand or spend a lot of time digging for it.

Level 1 Goals:

1. Build a house. start out small if you want or skip to level 2 and build that 2 story house.

2. Make a fishing pond. Your fishing line will not reach the surface. Neither will you.

3. Build a mob spawner area. You'll need the loot for trading.

4. Build a garden.

5. Build a farm and get some animals.

Level 2 Goals.

1. Make the the shopping mall an indoor one.

2. Build an outdoor redstone lamp that can be activated from inside.

3. Build a Nether portal and go there.

4. Build a 2x2 piston door EXIT/ENTRANCE for a new or existing structure using only sand blocks.
The 4 blocks for the door can be glass or sand.
Redstone items are available in the shop.

5. Build a large structure to grow some trees.

Rules:

1. Build using only the items provided.
2. Glass blocks can be used for windows ONLY.
3. Stair blocks for stairs only. Fences for making a fences only. etc.