“…Small cetaceans have been used as bioindicators of bioaccumulative pollutants (Aguilar, 1984; Borrell et al ., 2004; Borrell & Aguilar, 2007; Lemos et al ., 2013) and are suitable as indicators for monitoring other natural or anthropogenic threats, specifically in areas heavily impacted by human activities. Examination of the injuries in wild cetaceans using photo-ID techniques (Evans & Hammond, 2004; Van Bressem et al ., 2007, 2015; Kiszka et al ., 2008; Murdoch et al ., 2008; Tetley et al ., 2012; Bessesen et al ., 2014; Sanino et al ., 2014; Hupman et al ., 2017) might provide good information on direct impact of potential threats on these animals (Hupman et al ., 2017). Vessel strikes, fishing entanglement and by-catch, or inter- and intra-species interactions can heavily impact small cetacean populations in coastal areas (Parsons & Jefferson, 2000).…”