Our convoy is headed to a makeshift base camp on the bank of the Lungwevungu River (one of many that form the Okavango-Zambezi water tower), where a team of scientists plans to set off and survey.

Seen from space, high above Africa, the Okavango Delta resembles ... He ruddered toward the mid-river channel, giving the animal space along the bank. Suddenly a great bulge of water rose beside ...