O’Hern, J.E., Sculley, M., Jean-Smith, K., Biggs, D., Slowey, N., Alarcon Ruales, D. and Duncan, R. 2018. Marine mammal distribution in Ecuador: surveys aboard a ship of opportunity as a means of monitoring relative abundance. Latin American Journal of Aquatic Mammals. 12, 1-2 (Mar. 2018), 28-39. DOI:https://doi.org/10.5597/00235.