The Rio Cubatão is a river in the state of São Paulo, Brazil. It originates at coordinates 23º56'11" south and 46º57'20" west. The river flows through the Santos Estuary region, where its waters interact with mangrove ecosystems. These mangroves are used by local communities, such as Vila dos Pescadores, for artisanal fishing, indicating a working waterfront. For paddlers, resources are available to help uncover access points, boat ramps, and facilities needed for a day on the water. Specific locations like Marina Cubatão are noted as points of interest, providing amenities and potential fishing spots. The overall character of the paddling experience is shaped by its estuarine environment, where the river meets the coastal zone. The presence of mangroves and fishing communities suggests a landscape with both natural and cultural elements. The area supports recreational activities like kayaking and paddle boarding. Paddlers should plan by consulting local resources for current access points and conditions, particularly regarding the tidal influence in the estuary and any regulations pertaining to the mangrove areas.