Arnoux's beaked whales are found in a circumpolar pattern in the southern Hemisphere from the Antarctic continent and ice edges (ca. 78°S) north to about 34°S in the South Pacific (Kasuya 2002). They may even reach as far north as 24°N in the South Atlantic off South America. Nowhere within this range are they very well known or considered common. Most of the reported sightings are from the Tasman Sea and around the Albatross Cordillera in the South Pacific. The overwhelming majority of strandings have been from around New Zealand (Balcomb 1989, Jefferson et al. 1993). The northernmost records are strandings from Brazil, Argentina, South Africa, and Australia (Paterson and Parker 1994, Culik 2004).