Sediment sampling (IMAGE) University of Plymouth Caption Dr Imogen Napper (left) with Dr Anju Baroth, of the Wildlife Institute of India, who joined the expedition's water team for a day of sediment and water sampling in Varanasi, Uttar Pradesh on June 8, 2019 Credit Photo by Sara Hylton, National Geographic. Taken on assignment for National Geographic's Usage Restrictions National Geographic "Sea to Source: Ganges" Expedition Promo Images PERMITTED USE: This image may be downloaded or is otherwise provided at no charge for one-time use for coverage or promotion of National Geographic "Sea to Source: Ganges" expedition. Copying, distribution, archiving, sublicensing, sale, or resale of the image is prohibited. REQUIRED CREDIT AND CAPTION: Any and all image uses must (1) be properly credited to the relevant photographer, as appears in the file name, (2) be accompanied by a caption, which makes reference to National Geographic "Sea to Source: Ganges" expedition, and (3) include a prominent link to NatGeo.org/Plastic. DEFAULT: Failure to comply with the prohibitions and requirements set forth above will obligate the individual or entity receiving this image to pay a fee determined by National Geographic. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.