1. Cooperative Institute for Marine and Atmospheric Research, Research Corporation of the University of Hawai‘i 1 , Honolulu, Hawaii 96822, USA
2. Marine Physical Laboratory, Scripps Institution of Oceanography, University of California San Diego 2 , La Jolla, California 92093, USA
3. Marine Biology Graduate Program, University of Hawai‘i at Mānoa 3 , Honolulu, Hawaii 96822, USA
4. Bioacoustics and Behavioral Ecology Lab, Syracuse University 4 , Syracuse, New York 13244, USA
5. Hawaiian Islands Humpback Whale National Marine Sanctuary 5 , Kihei, Hawaii 96753, USA