Abstract

Very little is known about the killer whales (Orcinus orca) that frequent the waters of Chilean Patagonia. Even information as to whether identified individuals are visitors or residents of the region is unknown. Here, we report on opportunistically collected observations in this region from 2001 through 2012. Killer whales were observed on 119 separate occasions in group sizes ranging from one to groups of over 50 individuals. We also describe observed behaviour and present a first catalogue of individuals in Chilean Patagonia. We identified 49 individuals, only seven of which were sighted more than once.