Gentoo, Half Moon Island I was both charmed and alarmed at the uninhibited dash that this gentoo penguin made towards me. Its proximity allowed me to see the detail of its beautiful ivory plumage and the sweet orange colour of its feet against the white snow. However, I was continually conscious of the Antarctic code of conduct for humans, designed to prevent interference with the behaviour of wildlife and prohibit any trace of human detritus left behind

Photograph: Rona Mcseveny