Lucid Time!

When I was a kid, I used to always have these dreams about being in a pool or lake and huge waves would start coming and I would be drowning and gasping for breath. I made that a dream sign, but I rarely dream about that sort of thing anymore.

I cannot really remember how things got started, but I was treading water in the corner of this aquarium. The pool was sort of long and thin and I was trapped in one end.
There was this giant yellow-brown jellyfish, now I mean huge. It must have been three stories tall. The top, sort of domed shaped part poked up above the water. The stingers hung down into the aquarium, so that I could not dive under it.
To the left, there was about 6-8 feet of clearance for me, and I tried to squeeze around that way. But there was this strange thing floating between the jellyfish and the wall. It looked like a bunch of bloody goat horns kind of in a spikeball. When I went close to it, I was repelled away.
I thought about swimming though the jellyfish tentacles, thinking that maybe they wouldn't sting. I decided that was a risk that I wasn't willing to take.
After a little while, all of the creatures in the room rearranged into a maze, almost.
There were a bunch of the horn spikeballs and a few more of the giant jellyfish. I made my way to this computer terminal mounted in the wall, just above the water level.
When I came onto the computer, a popup appeared on the screen.
"Would you like to realize you're dreaming?" With a yes or no option.
I clicked the "Yes" and started to fly above the maze of jellyfish and spikeballs. Then I woke up.