This observation was made as part of the Okavango Wilderness Project, a 9-year endeavour to measure the heartbeat of the Okavango Delta. For more information, visit http://intotheokavango.org
The African bush elephant (Loxodonta africana) is the larger of the two species of African elephant. Both it and the African forest elephant have usually been classified as a single species, known simply as the African elephant, but recent evidence has seen the forest elephant classified as a distinct species. Some authorities still consider the currently available evidence as insufficient for splitting African elephants into two species.