Choi Lima, K.F., de Sousa Abessa, D.M., Wedekin, L.L., Gonzalez-Socoloske, D., Sousa-Lima, R., Oliveira de Meirelles, A.C. and Negrão Silva, C.P. 2024. Density and abundance estimation of West Indian manatee, Trichechus manatus, between the states of Ceará and Piauí, Northeast Brazil, using active acoustics. Latin American Journal of Aquatic Mammals. 19, 1 (Apr. 2024), 112-119. DOI:https://doi.org/10.5597/lajam00333.