More than three times the Salto Angel, the highest waterfall in the world. Under the Denmark Strait, a strip of sea between Greenland and Iceland, hides what would be the highest waterfall in the world, if it were not submerged. 3505 meters of difference in height against the 979 meters of the Auyantepui mountain, in the heart of the Amazon forest, where the cold and dense water of the Nordic seas plunges into the warmer and lighter one of the Irminger sea, creating a real underwater waterfall. The waterfall of the Denmark Strait flows creating a downward flow of 5 million cubic meters per second. For comparison, the flow of Niagara Falls is just 2407 cubic meters per second. Too bad it can’t be admired except through oceanographic instrumentation.