It was one of the most relaxing feelings imaginable. Floating like a buoyant cork, drifting up and down with the warm ocean waves, sliding playful down into the troth between wave crests and up to the top of the next as each wave passed my position. I took a deep cleansing breath and let my mind slow to a meditative pace and watched, straight above me as my view of soft white clouds shifted with each rise and fall, letting time pass without a care – until, suddenly the whole ocean disappeared out from beneath me and I was suddenly falling with nothing but misty air to support me. I was too surprised to even scream as the clouds stopped shifting and then disappeared altogether behind the giant wall of angry white water. This was going to be really – really unpleasant.