1. Department of OceanographyFederal University of Pernambuco Recife Brazil
2. Strategic Planning SuperintendenceSecretariat of Planning of the State of Piauí Teresina Brazil
3. Marine Mammal Rehabilitation CenterAssociation for Research and Preservation of Aquatic Ecosystems Fortaleza Brazil
4. Chico Mendes Institute for Biodiversity ConservationDelta do Parnaíba Protected Area Paranaíba Brazil
5. Department of ZoologyFederal University of Pernambuco Recife Brazil
6. Department of Fisheries EngineeringFederal University of Delta do Parnaíba Parnaíba Brazil