salvador montenagro. >> so why the change in jobs? >> well, i was slowly forced out. >> why do you think you were really forced out? >> because of the canal issue. >> you are a scientist. you look at what the data presents. you do your analysis. >> exactly. >> yet if they don't agree with it all of a sudden you had to leave. >> vammen wanted to show us why she opposes the canal here. there is no better way to understand lake nicaragua, than this. this isn't exactly what we planned. the waves and wind are brutal. soon we'd even lose one of our cameras. >> so we're here in the middle of lake nicaragua and one of the national newspapers took something like this into the lake. this is a depth finder what they did is went up and down the proposed canal route what they found, it's shallow. much too shallow for any of those giant supertankers. >> this documentary from the independent nicaraguan newspaper confidential, followed the proposed route through the lake, taking depth measurements all along the suggested path. super tankers would req