1. Department of Agriculture, Forestry and Fisheries; Fisheries Branch; Private Bag X2, Rogge Bay Cape Town 8012 South Africa
2. Marine-Research Institute (MA-RE); University Cape Town; Private Bag X3, Rondebosch Cape Town 7700 South Africa
3. Department of Fisheries and Aquatic Sciences; University of Namibia; Private Bag 13301 Windhoek Namibia
4. National Marine Information and Research Centre; Ministry of Fisheries and Marine Resources; P.O. Box 912 Swakopmund Namibia
5. Instituto Nacional de Investigação Pesqueira (INIP); Rua Mortala Mohamed, Ilha de Luanda C.P Luanda 2601 Angola
6. Department of Environmental Affairs, Branch Oceans and Coasts Research; P.O.Box 52126, Victoria & Alfred Waterfront Cape Town 8000 South Africa
7. Animal Demography Unit; Department of Zoology; University of Cape Town; Rondebosch Cape Town 7701 South Africa