Superagüi National Park is located on the northern shore of Paraná State in southern Brazil. Superagüi is part of the largest continuous stretch of intact Atlantic Rainforest. Superagüi National Park is a core area of the Atlantic Forest Southeast Reserves World Heritage Site and is one of the most important protected areas within this Brazilian hotspot.
It is thought that the park shelters rich flora and fauna, but further studies are needed. Two regionally endemic species rely on this conservation unit for protection. First, the black-faced lion tamarin (Leontopithecus caissara) is found within Superagüi. It is the rarest primate of the Americas. The black-faced lion tamarin is endangered; it is estimated that there are 300 individuals in the park's region. The second endemic species found within the park is the red-tailed amazon parrot (Amazona brasiliensis). An additional eight species are considered threatened or endangered to some degree according to either Brazil's red list of endangered species or the red list maintained by the World Conservation Union (IUCN).
ParksWatch considers Superagüi National Park to be vulnerable and there is a high risk that the protected area will fail to protect and maintain its biodiversity and its natural ecological processes in the medium-term future. Monitoring is needed. The most significant threats include lack of a well-assembled team, lack of a management plan, lack of implementation, unauthorized human presence, and the lack of secure land rights for the conservation unit.