China's Liu Ce swims during the men's 200m individual medley SM6 heat at the 2008 Paralympics at the National Aquatics Centre, also known as the Water Cube, in Beijing September 7, 2008. [Agencies]

Natalie du Toit of South Africa swims during the women's 100m Butterfly S9 heat at the 2008 Paralympics at the National Aquatics Centre, also known as the Water Cube, in Beijing September 7, 2008. [Agencies]