Around 80% of Madagascar's wildlife is found nowhere else as a result of the island's strange geological history. Once part of the Gondwana supercontinent, Madagascar lost contact with Africa (160 million years ago), then with Antarctica, Australia and finally India. Many of its endemic species, such as the elephant bird, stuck with the island for the entire journey and gradually evolved into forms that differed from their cousins on other continents. But while Australia and India drifted far from Africa, Madagascar remained close - only 400km of sea separates them today. Animals and seeds swept out to sea from Tanzania's and Mozambique's rivers could conceivably make it across to the island as happened with the ancestors of Madagascar's lemurs around 54 million years ago, and its baobab trees 20Ma.
High up in the branches of the baobab a little-seen spectacle takes place.
Occurring high above ground, at night and for only a short time each year, the opening of the baobab's flowers is rarely observed. The crew used rope access and special climbers to reach the tree tops. Once there, they were able to avoid the usual grainy footage associated with night filming by using low light capable HD cameras.