Abundance estimation of franciscana dolphins by means of aerial surveys in Buenos Aires Province, Argentina

Abstract

Between October 11 and 16, 2019, 5 flights were made off the coast of the province of Buenos Aires in meteorological conditions that allowed the sighting of various cetacean species. In particular, 41 sightings of Franciscan dolphins (Pontoporia blainvillei) were made, totaling 68 individuals. In addition, several herds of common dolphins were observed, some very numerous.