| Summary: | Behavioral patterns and environmental conditions affect the distribution of humpback whales Megaptera novaeangliae throughout breeding areas. Thus, habitat use tools are crucial in understanding the relationship between them and the environment. We investigated the environmental causes that led to different distribution of visual and acoustic records, in addition to the relationship between acoustic and visual records in the Bacia de Santos. Data collected between 2016 and 2019 were considered by means of ship-based cruises of Passive Acoustic Monitoring and Sighting of the Bacia de Santos Cetacean Monitoring Project (PMC-BS / PETROBRAS). In this period there were 183 visual and 88 acoustic registers. Kernel density analysis showed areas of concentration near Cabo Frio (RJ) and Ilhabela (SP), both for visual and acoustic records with moderate-high overlap for both local records. Linear regression with Generalized Least Squares was used to investigate the relationship between visual and acoustic records with environmental variables, considering the spatial autocorrelation of the residuals. Although the model with only spatial autocorrelation but without explanatory variables was the most parsimonious, 81% of sightings and 86% of acoustic records are on the continental shelf, corroborating the pattern, which the species tends to occupy shallow regions and close to the coast during their breeding season. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Padrões de comportamento e condições ambientais afetam a distribuição das baleias-jubarte (Megaptera novaeangliae) ao longo das áreas de reprodução. Assim ferramentas analíticas de uso de habitat são cruciais no entendimento da relação dos indivíduos entre si e com ambiente. Foram investigadas as causas ambientais que levaram a diferentes distribuições dos registros visuais e acústicos, além da relação dos registros acústicos com os visuais na Bacia de Santos. Foram considerados dados coletados entre 2016 e 2019 por meio de cruzeiros embarcados ...
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