Open water and iron oxidizing bacteria at mouth of Chena River No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Sam Demientieff talks about the presence of open water and orange bacteria at the mouth of the Chena River despite the cold air temperature. Process Observed: Open WaterIron Oxidizing Bacteria Date Process Observed: Saturday, December 16, 2006 Galleries: Mouth of the Chena River Gallery