Makes a ocean mysteriously disappear!!
Step 1: Create a New World (Or Not)
It really doesn't matter... Just get onto a world.
Step 2: Build a Platform at Sea Level
I think it has to be 3 blocks wide, I don't know.
Step 3: Drop Into the Unknown
Step 4: Get Underneath
Now swim until your head hits the underside of the bridge.
Step 5: Press Against the Bottom
Just press your head to the bottom of the bridge and swim around a bit... Eventually you'll see the ocean disappear for a second. Repeat until you locate the exact spot where the ocean disappears. Take a screenshot quickly. ( home & off button pressed simultaneously )