Feb 11, 2005 — David Doubilet documents the underwater world around the globe for National Geographic. He's a contributing photographer in residence with the magazine. His latest project on the Okavango River Delta in Botswana was featured in the December issue of National Geographic. Doubilet and his partner Jennifer Hayes will talk about their work and show photos at Save The River's Winter Weekend tomorrow at Bonnie Castle in Alexandria Bay. When not on assignment, Doubilet and Hayes live on the St. Lawrence River in Clayton. The infestation of zebra mussels in the St. Lawrence has made the water extremely clear, and it's a mixed blessing for Doubilet. On one hand, he calls it ecological devastation.