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Manaus has one of the first floating docks, added in 1906. Because of this clever innovation, loading didn’t depend on the river flow and tides any longer which was important for their port operations. The Amazon can rise as much as 65 feet in a heavy wet season!
We arrived on a Sunday and unfortunately most of the stores were closed. However, we were able to take a shuttle bus to a hotel resort, giving us the opportunity to see much of the city, as well as a small zoo operated by the hotel.
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At last we reached another Meeting of the Waters, this time the Amazon which is called the Salimoes River at this point, and the Rio Negro. It was amazing to see the muddy café-au-lait colored Amazon flowing beside the dark, clear water of the Rio Negro without mixing! This phenomenon is caused by the different chemical composition of the suspended particles in each -- one is more acidic than the other, as well as different currents and temperatures. You can actually see a stripe before they finally blend after more than three miles! This happens in several places where tributaries feed into the 4,500 miles of the central Amazon River.
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