1. Centre for Statistics in Ecology, Environment and Conservation University of Cape Town South Africa
2. Sea Search Research and Conservation Cape Town South Africa
3. Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
4. Mammal Research Institute Whale Unit, Faculty of Natural and Agricultural Sciences University of Pretoria Pretoria South Africa
5. Institute for Coastal and Marine Research Nelson Mandela University Gqeberha South Africa
6. Department of Oceanography Nelson Mandela University Gqeberha South Africa
7. Animal, Plant and Environmental Sciences University of the Witwatersrand Johannesburg South Africa
8. Mammal Research Institute, Department of Zoology and Entomology University of Pretoria Pretoria South Africa