1. School of Science, Technology, and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
2. Dolphin Communication Project, Port St. Lucie, Florida, U.S.A.
3. U.S. Geological Survey, Wisconsin Cooperative Wildlife Research Unit, Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, Wisconsin, U.S.A.
4. Wisconsin Cooperative Wildlife Research Unit, Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, Wisconsin, U.S.A.