Experience: I was swallowed by a hippo
There was no transition at all, no sense of approaching danger. It was as if I had suddenly gone blind and deaf.
I was aware that my legs were surrounded by water, but my top half was almost dry. I seemed to be trapped in something slimy. There was a terrible, sulphurous smell, like rotten eggs, and a tremendous pressure against my chest. My arms were trapped but I managed to free one hand and felt around – my palm passed through the wiry bristles of the hippo's snout. It was only then that I realised I was underwater, trapped up to my waist in his mouth...
I remember looking up through 10 feet of water at the green and yellow light playing on the surface, and wondering which of us could hold his breath the longest. Blood rose from my body in clouds, and a sense of resignation overwhelmed me. I've no idea how long we stayed under – time passes very slowly when you're in a hippo's mouth.