[1
]Research Department, New England Aquarium, Boston, MA 02110, USA
[2
]Applied Research Laboratory, The Pennsylvania State University, State College, PA
16804, USA
[3
]Alaska Fisheries Science Center, NOAA National Marine Mammal Laboratory, Seattle,
WA 98115, USA
[4
]Bioacoustics Research Program, Cornell Lab of Ornithology, Ithaca, NY 14850, USA
[5
]Nicholas School of the Environment and Pratt School of Engineering, Duke University
Marine Laboratory, Beaufort, NC 28516, USA
[6
]Center for Conservation Biology, Department of Biology, University of Washington,
Seattle, WA 98195, USA