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Chafing behavior by scalloped hammerhead sharks (Sphyrna lewini), including an unusual scratching of claspers

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This research was conducted under Galapagos National Park Directorate (GNPD) research permits PC-27-20 & PC-22-21. We thank the Charles Darwin Foundation and the GNPD for the institutional support. A special thanks to the reviewers for their valuable comments towards improving this publication. We are also grateful to the crews of MY Passion, MY Cachalote Explorer and MY Danubio Azul and Tamara Cole for her assistance during field work. This publication is contribution number 2462 from the Charles Darwin Foundation for the Galapagos Islands.


Funding for this study was provided by the Save Our Seas Foundation, the Mark and Rachel Rohr Foundation, Darwin and Wolf Conservation Fund, Dario Mariani, and National Geographic.

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Correspondence to Ana V. Moya-Serrano.

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Conflict of interest

The authors declare no competing interests.

Ethical approval

No animal testing was performed during this study.

Sampling and field studies

All necessary permits for sampling and observational field studies have been obtained from the competent authorities.

Data availability

The data that support the findings of this study are available from the corresponding author and the supplementary information files.

Author contribution

AM conceived and designed the research. PS reviewed the research plan. AM and PS conducted the fieldwork. AM processed the data and wrote the manuscript. PS commented on the draft version of the manuscript.

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Communicated by M. Schratzberger

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Moya-Serrano, A.V., Salinas-de-León, P. Chafing behavior by scalloped hammerhead sharks (Sphyrna lewini), including an unusual scratching of claspers. Mar. Biodivers. 52, 66 (2022).

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