1. Zoology Department and Marine Apex Predator Research Unit; Nelson Mandela University; 6031 Port Elizabeth South Africa
2. Marine Apex Predator Research Unit; Nelson Mandela University; 6031 Port Elizabeth South Africa
3. Department of Zoology and Entomology; Rhodes University; 6140 Grahamstown South Africa
4. African Earth Observation Network (AEON); Earth Stewardship Science Research Institute (ESSRI); Nelson Mandela University; 6031 Port Elizabeth South Africa