Add "being swallowed by a hippo" to the list of things to avoid in Africa:
I reached over to grab his outstretched hand but as our fingers were about to touch, I was engulfed in darkness. 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 wriggled as hard as I could, and in the few seconds for which he opened his jaws, I managed to escape. I swam towards Evans, but the hippo struck again, dragging me back under the surface. I'd never heard of a hippo attacking repeatedly like this, but he clearly wanted me dead.