Pivari, D., Moreira, S., Crespo, H., Cardoso, J. and Sousa-Lima, R. 2024. Downsweep calls attributed to sei whales, Balaenoptera borealis, in Ilhabela, São Paulo, Brazil. Latin American Journal of Aquatic Mammals. (Apr. 2024). DOI:https://doi.org/10.5597/lajam00331.