12 year old Arjina Khatun and her mother Asma Khatun lived in a house that was washed away by floods. Most of the 200 families on this embankment have moved two or three times because of erosion and some say they have had to move as many as 10 or 11 times during their lives. 'Chars' such as this - islands that are periodically submerged by the country's mighty rivers - are home to over five million people in Bangladesh. Life for the char dwellers is hazardous and uncertain. Flooding is common, as is loss of land and erosion, making it a struggle to grow enough food, and meaning families often need to relocate.