1. Laboratory of Molecular Ecology and Evolution and Marine Mammal Ecology Group; School of Biological Sciences; University of Auckland; Auckland 1010 New Zealand
2. Department of Marine Science; University of Otago; PO Box 56 Dunedin New Zealand
3. Marine Mammal Institute and Department of Fisheries and Wildlife; Hatfield Marine Science Center; Oregon State University; Newport Oregon 97365 U.S.A
4. Laboratory of Molecular Ecology and Evolution; School of Biological Sciences; University of Auckland; Auckland 1010 New Zealand
5. Collégial International Sainte-Anne; 1300 Boulevard Saint-Joseph Montreal Quebec H8S 2M8 Canada
6. Marine Mammal Ecology Group; School of Biological Sciences; University of Auckland; Auckland 1010 New Zealand
7. New Zealand Department of Conservation; Southland Conservancy Office; PO Box 743 Invercargill 9840 New Zealand
8. New Zealand Department of Conservation; Aquatic & Threats Unit; Wellington 6143 New Zealand
9. Blue Planet Marine; PO Box 613 Kingston Hobart Tasmania 7051 Australia