After being a scuba diving assistant to instructor thru one summer, I had similar effect after spending close to 10 hours under water every day for weeks: when

After being a scuba diving assistant to instructor thru one summer, I had similar effect after spending close to 10 hours under water every day for weeks: when I lay down for the night on a flat bed and open my eyes, the whole ceiling would float like a water! This has be somewhat depicted in movie "The Big Blue" https://youtu.be/82onGmBx9ZM?t=74 https://youtu.be/82onGmBx9ZM?t=74