What a great thread. Ive had a similar dream
of being underwater with out equipment
I had an opportunity to dive with a Hooka (sp) set up
surface supplied air and all I had was a mask-fins-weight belt. It was really close to the dream. Now I dive with a BP/W nothing cluttering my front and it comes close. Great buoyancy and trim
controlling movement in the water column with your breathing
is close to the dream.