Blue Massawippi, a non-profit based in the Eastern Townships, gets its name from the lake it's been protecting since it was created in 1968. These days, the group of volunteer conservationists watching over the Massawippi, one of three major lakes between Sherbrooke, Que., and the Vermont border, is in the fight of its life. "For the first time this year, in October, we found some zebra mussels on our collectors [in Lake Massawippi]," said Philippe-David Blanchette, one of the organization's directors.