Exotic Pets in China Fuelling Biodiversity Loss. Human-Elephant Conflict in Sri Lanka. My name is Sean Gallagher, a British photographer and filmmaker who has been based in Asia for over a decade. From the Tibetan Plateau to the Indonesian archipelago, I often spend months in the field travelling across the continent documenting its most important environmental, social and cultural issues.

From sea to source, the Mekong river stretches nearly 5000km through six countries. More than 60 million people depend on its waters for survival and it is second only to the Amazon in its biodiversity. The Source of the Mekong.