Within this geographic space there are three terrestrial ecoregions - the Serengeti Volcanic grasslands, the Southern Acacia-Commiphora bushland, and the Northern Acacia-Commiphora bushland. The Serengeti Volcanic grasslands and Acacia-Commiphora bushland are “globally outstanding” and cover areas of about 18,000 km² and 228,000 km², respectively. The Southern Acacia-Commiphora bushland, covering an area of about 326,000 km², is considered “regionally outstanding” and relatively stable, since most of it falls under some form of protected regime.

WWF-EARPO’s species work covers selected species and their habitats that are of particular conservation concern. In eastern Africa, WWF’s flagship species include the black rhino, African elephant, marine turtles and great apes.

Turtle conservation is addressed by the Eastern African Marine Ecoregion Programme and the great apes by the Albertine Rift Montane Forests Ecoregion Programme. The savanna ecosystem work focuses on the black rhino, the African elephant and their habitats.