The winner of the underwater group and overall winner of the competition: 'Flight of the Rays' by Florian Schulz from Germany, which shows an unprecedented congregation of Munkiana Devil Rays in Mexico An incredible picture of rays swimming through the ocean in a colossal school has scooped top prize in the Environmental Photographer of the Year 2010 awards. The thousands-strong group of Munkiana Devil Rays were spotted in Baja California Sur, Mexico, by German conservation photographer Florian Schulz. Organised by the Chartered Institution of Water and Environmental Management (CIWEM), Winning photographers will have their images showcased in a free international exhibition at The Air Gallery in London from October 25-30.

Photograph: Florian Schulz/Barcroft Media