1. Department of Biological Sciences Institute for Communities and Wildlife in Africa University of Cape Town Private Bag X3, Rondebosch Cape Town 7701 South Africa
2. Shark Spotters P.O. Box 22581 Fish Hoek 7974 South Africa
3. South African National Parks Cape Research Centre Tokai Road Cape Town 7966 South Africa
4. South African Institute for Aquatic Biodiversity Private Bag 1015 Grahamstown 6140 South Africa