"I was aware that my legs were surrounded by water, but my top half was almost dry," he recalled. "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 realized I was underwater, trapped up to my waist in his mouth."