Great read! I find this whole discovery fascinating. The Earth is in a constant state of change and perhaps at one time this reef was just like any other reef system. Perhaps as the Amazon grew into the huge river system we know today more and more silt, nutrients and fresh water was delivered to the reef and with time and Darwinian Evolution species began to change and adapt to the new conditions. Like you Scott I am a believer in DNA, if it's there it will find a way to survive. Life always finds a way and this is a perfect example of this. It's ironic that, as I understand it, this system was discovered while surveying for oil. A great discovery on the possible precipice of it's destruction due to man's constant intervention in the search for oil. Collection and study of the reefs' flora and fauna is pretty much inevitable, I only hope it's preservation will become a priority and not just a "grab what you can and run" reaction.