About the Authors

Alison Kock

alison@sharkspotters.org.za

Affiliations Department of Zoology, University of Cape Town, Cape Town, South Africa, Shark Spotters, Cape Town, South Africa

M. Justin O’Riain

Affiliation Department of Zoology, University of Cape Town, Cape Town, South Africa

Katya Mauff

Affiliation Department of Statistical Sciences, University of Cape Town, Cape Town, South Africa

Michael Meÿer

Affiliation Department of Environmental Affairs, Oceans and Coasts Branch, Cape Town, South Africa

Deon Kotze

Affiliation Department of Environmental Affairs, Oceans and Coasts Branch, Cape Town, South Africa

Charles Griffiths

Affiliation Department of Zoology, University of Cape Town, Cape Town, South Africa

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AAK MJO CG. Performed the experiments: AAK MM DK. Analyzed the data: AAK KM MJO. Contributed reagents/materials/analysis tools: AAK KM MJO MM DK CG. Wrote the paper: AAK. Provided intellectual and editorial comments: MJO KM CG MM.