The Amazon always surprising us. In 2014, an expedition to the Foz do Amazonas Basin with the Cruzeiro do Sul vessel from the Brazilian Navy confirmed the existence of a gigantic coral reef off the coast of Amapá and Pará. Researchers from the Universities of Amapá and Rio of January recorded 61 species of sponges and 73 species of fish, in addition to several types of calcareous algae, responsible for the construction of the base of the structure, the rhodoliths. The reef is 9,500 km² (https://www.bbc.com/portuguese/geral-43970980). The result of the work was published in the scientific journal Science Advances in April 2016.
Recently, a group of researchers from the Federal University of Pará (UFPA) presented research results describing the largest volume of drinking water in the world. The reserve is located in the northwest of the State of Pará, and the volume of water is up to 86 million square meters, in comparative terms, the new reservoir is almost twice the size of the Guarani Aquifer – with 45 thousand km³ of volume.