I was scuba-diving with someone else and his dog. (The dog was also wearing a snorkel.) At the bottom of the ocean, we came across a strange contraption that looked like it was made of newspaper. It had lots of little sharp blades that moved up and down chopping up all the coral and fish on the ocean floor.
On top of that machine, there was a little trapdoor and airlock so we entered. Inside, it looked like a diner built entirely out of gunmetal furniture. There was no one serving at the counter. The special was seafood.
I had a little handheld teleporter. Unfortunately, there weren't any obvious dials or switches to control it so hoping for the best, I pushed the button. There was a flash and I found myself in an abandoned desert town, standing at the intersection of two dirt roads that stretched onwards to the horizon in four directions. There was a little wooden hut nearby and I started to walk towards it, at which point I woke up.