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Supplemental Information

Supplementary table 1

Supplementary table 1. Raw data for the sightings GLMs.

DOI: 10.7287/peerj.preprints.3051v1/supp-1

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Christoph A. Rohner conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Anna L Flam performed the experiments, reviewed drafts of the paper.

Simon J Pierce performed the experiments, wrote the paper, reviewed drafts of the paper.

Andrea D Marshall conceived and designed the experiments, performed the experiments, contributed reagents/materials/analysis tools, prepared figures and/or tables, reviewed drafts of the paper.

Animal Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Field work involved visual observations and photographic identification and was carried out under Mozambique’s Administração Nacional das Áreas de Conservação permit number 13 for work within the Bazaruto Archipelago National Park. No permit was required for work outside the park. No animals were restrained, captured or killed.


CAR and SJP were supported by two private trusts and Aqua-Firma. ADM and AF were supported by grants from Ann Rooney and Jim Artindale. ADM was additionally supported with funding from National Geographic. Field research between 2005 and 2010 was supported by grants from the Save Our Seas Foundation and funding from the University of Queensland. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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