[2] The park is in the Vale do Ribeira region, and holds part of the Iguape-Cananéia-Paranaguá estuary lagoon complex, one of the largest breeding grounds for South Atlantic marine species.

It was recognized by UNESCO as a core zone of Atlantic Forest Biosphere Reserve, and a natural World Heritage Site.

[3] The Superagui lion tamarin (Leontopithecus caissara) was found in the south sector of the park in 1990, a critically endangered species endemic to the region.

Objectives include preservation of ecosystems and genetic diversity, and support of scientific research, environmental education and ecotourism.

[3] As of 2022, according to São Paulo's Guide to Protected Areas, the park is now open to the public every day from 8 AM to 5 PM.