Standing on the shore of Lake Turkana, you would be almost forgiven for believing you are at the seaside. There is swell in the waters, a sandy beach, and waves are lapping up to it. A fierce wind is blowing and fisherman boats are moored nearby, ready to go. But this no sea, it’s Lake Turkana – the world's largest permanent desert lake and largest alkaline lake in the world covering an area of about 7,000 sq km. The local people call it the Jade Sea because of its breathtaking turquoise color.