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Additional Information

Competing Interests

The authors declare they have no competing interests.

Author Contributions

Rafael de la Parra conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper.

Alistair D.M. Dove performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, confirmed observations on aquarium held animals.

Beatriz Galván performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, aerial survey observations.

Field Study Permissions

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

SEMARNAT

Permiso de Colecta Científica

SGPA/DGVS/10048/12

Funding

Conanp (National Commission for Natural Protected Areas) provided logistic support during the early stage of this work, with boat, crew and facilities from 2003 until 2009. UNDP (United Nations Development Programme) provided boat maintenance and tagging materials. Georgia Aquarium, has been substantial for the development of this work, and supported aerial suvey. Ch'ooj Ajauil AC, has provided volunteers, cabinet and processing time, logistics and coordination in field and research. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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