Africa on BBC Knowledge: fourth episode airing on 10 March

A great white shark grips the floating, rotting carcass of a Bryde's whale. A once-in-a-decade feast off Cape Town that the Africa crew had only dared to hope they might film. Once news of the carcass arrived, the team had to scramble to get there in time, before the dozens of huge sharks finished it off. © Tim Brown

Countless butterflies, of numerous species 'hill top' in a spectacular dance to impress mates on the bare summit of Mount Mabu in Mozambique. The crew were the first to film at this site after its discovery on Google Earth. © BBC 2012

A springbok, true to its name, springs or 'pronks' in an exuberant display. There are many theories as to why springbok behave in this way but none have quite explained it. The Africa crew filmed these elegant creatures seemingly 'dancing for joy' in super slow motion following a rare rain shower. © Simon Blakeney

African, or 'jackass' penguins earned their name from the braying sound they use to greet one another. This pair have a lifelong association, returning to the same island every year to try and raise their chicks in spite of the African heat. The Africa crew had to return to film for a second year, after all the nests were abandoned during a heat wave in 2010. © Rosie Thomas

A baby green turtle is the last to emerge from her nest deep within the sand. She instinctively knows she must follow her brothers and sisters, heading for the sea, but she knows nothing of the dangers ahead of her. © Katharina Brown

A baby green turtle sees the world for the very first time. The challenge of breaking out of her shell and digging her way free of the sand is nothing compared to the journey she'll face to get to the sea; predators flock to the beach - hoping to make a meal of her. © Katharina Brown

A springbok 'pronks' - an extraordinarily athletic leap into the air. Springbok are southern Africa's desert survivors, continually roaming across the bone dry land in search of rain and fresh grass. The Africa crew filmed these elegant creatures seemingly 'dancing for joy' in super slow motion following a rare rain shower. © Paul Brehem

An aerial view of one of many granite inselbergs in Mozambique. These monuments are shrouded on the lower slopes by trees, that combined, make up the largest tract of rainforest anywhere in southern Africa. The Africa crew joined only the second expedition to this area and were the first to film it from the air. © Hugh Pearson

An African penguin relishes the cool of a rain shower on Africa's southern tip. These birds, perhaps better known from icy climes, nest on a few small islands every year on Africa's Cape. There are no trees to shade their eggs from the intense sun and so the adults must risk death to provide shade themselves. © Rosie Thomas

A green turtle (Chelonia mydas) dodges death by the narrowest of margins, as a yellow-billed kite (Milvus aegyptius parasitus) swoops overhead. Sea turtles must come to the surface to breathe. Just metres from the beach this hatchling was still within range of the kite. The first few minutes of life outside of the egg are treacherous - captured in never seen before detail for Africa. © BBC 2012

Thousands of great white pelicans (Pelecanus onocrotalus) gather each year during the dry season in Gorongosa National Park, Mozambique. Retreating waters concentrate the fish, creating an opportunity that the birds can't resist. © BBC 2012

Giant king fish (Caranx ignobilis) gather in preparation for a unique migration up the Mtentu river. The Mtentu river is one of few remaining pristine wildernesses in South Africa, so the Africa crew avoided using disruptive motor boats, instead paddling to the location each day in a canoe. © BBC 2012

Lightning strikes in the distance as springbok (Antidorcas marsupialis) wait for rain to pass. These true desert specialists range over the world's greatest expanse of sand looking for grass renewed by rare and sporadic rains - when they find it, they seem to revel in the occasion but only once the rain has stopped falling! © BBC 2012