About the Authors

Oliver J. D. Jewell

Oli@sharkwatchsa.com

Affiliations Mammal Research Institute, University of Pretoria, Hatfield, Pretoria, South Africa, Dyer Island Conservation Trust, Kleinbaai, Western Cape, South Africa

Michelle A. Wcisel

Affiliations Dyer Island Conservation Trust, Kleinbaai, Western Cape, South Africa, ADU Zoology Department, University of Cape Town, Ronderbosch, Western Cape, South Africa

Enrico Gennari

Affiliations Research, Oceans Research, Mossel Bay, Western Cape, South Africa, South African Institute for Aquatic Biodiversity, Grahamstown, South Africa

Alison V. Towner

Affiliations Dyer Island Conservation Trust, Kleinbaai, Western Cape, South Africa, ADU Zoology Department, University of Cape Town, Ronderbosch, Western Cape, South Africa

Marthán N. Bester

Affiliation Mammal Research Institute, University of Pretoria, Hatfield, Pretoria, South Africa

Ryan L. Johnson

Affiliations Mammal Research Institute, University of Pretoria, Hatfield, Pretoria, South Africa, Research, Oceans Research, Mossel Bay, Western Cape, South Africa

Sarika Singh

Affiliation Department of Environmental Affairs, Cape Town, Western Cape, South Africa

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: OJDJ MAW EG AVT MNB RLJ SS. Performed the experiments: OJDJ MAW EG AVT RLJ. Analyzed the data: OJDJ MAW EG AVT MNB RLJ SS. Contributed reagents/materials/analysis tools: OJDJ MAW EG AVT RLJ SS. Wrote the paper: OJDJ MAW EG AVT MNB SS.