The series forms part of the Natural History Unit's Continents strand and was preceded by Andes to Amazon in 2000 and succeeded by Wild Africa later that year in 2001.

Tanganyika provides habitat for Limnocnida (freshwater jellyfish), the Bichir (a primitive fish), water cobra, the spotted-necked otter and diverse populations of cichlids.

The abandoned "country estate" of Col. Stewart Gore-Browne (incorrectly called "Henry" in the series) – known as Shiwa Ngandu – is visited.

“Bais" (Biaka, "glades") provide habitat for elephant, hippo and the western lowland gorilla, which numbers as many as 50,000 within the Odzala National Park.

Finally, Gabon's Loango National Park is visited – the last place where large African animals may still be seen wild on a seashore.

Returning again to the ROC, the Biaka are seen to expertly craft Portuguese-style crossbows and arrows made from seven different kinds of wood and other plants.

The Congo Basin is home to the largest number of non-human primates on earth, including three apes: gorillas, chimps and bonobos.

Although uninhabited now, pottery shards on the banks of the Sangha attest to former human habitation, as do the 2,300- to 2,500-year-old oil palm nuts found nearby.

Richard Oslisly, a French archeologist, believes he has found evidence of early "burn and chase" hunting at Lopé, a pattern which may explain the en masse migratory habits of mandrills in the local grasslands.