My first day in the boat, I was able to swim at the meeting of the waters (where the black water system and white water system meet). The white water is comprised of tons of sediments due to the run off of the Andes and the black water flows from the Rio Negro, and you can see a definite line between the two because of the differing flow speeds, temperatures, and densities. The black water was much warmer than the white, which is why you can see me sticking to the black water section. It also has a much higher biodiversity, so approximately 1 minute after this picture was taken i felt a large water creature brush past my leg and I decided it was about time to get out of the water.