 The study used passive acoustic monitoring, PAM, and convolutional neural networks, CNNs, to detect the presence of Amazon River dolphins in four different locations within the Mamirau Reserve in Brazil. The results showed that the dolphins were present in the river entrance and channel, as well as inside the flooded forest, indicating a wide distribution of their population throughout the region. Additionally, the researchers found that boats frequently overlapped with dolphin presence, suggesting that boat traffic could be a potential threat to the animal's survival. This article was authored by Flonzebs, Moina Geona, Mike van der Schaar, and others.