The Furo Charapucu channel runs to the south of the park, connecting the Cajari River to another part of the Vieira Grande Bay.

Flora include Virola surinamensis, Carapa guianensis, Ceiba pentandra, Calycophyllum spruceanum, Platymiscium filipes, Mauritia flexuosa and Açaí palm (Euterpe oleracea).

[3] Fauna include Arrau turtle (Podocnemis expansa), spectacled caiman (Caiman crocodilus), southern tamandua (Tamandua tetradactyla), Dasypus species, Kaapori capuchin (Cebus kaapori), South American tapir (Tapirus terrestris), cougar (Puma concolor), jaguar (Panthera onca), Amazonian manatee (Trichechus inunguis) and West Indian manatee (Trichechus manatus).

[3] The purpose was to preserve the natural ecosystems and landscape of an area of Marajó island, to support scientific research, eco-tourism and environmental education.

The park would support the request by the Pará Secretariat of State for the Environment (SEMA PA) for UNESCO to recognise the proposed Marajó Biosphere Reserve.