1. Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences Nanjing Normal University Nanjing China
2. Beibu Gulf Cetacean Research and Protection Center Fourth Institute of Oceanography, Ministry of Natural Resources Beihai China
3. Marine Mammal Institute, Hatfield Marine Center Oregon State University Oregon
4. Ziphius EcoServices 30403 North Holly Oaks Circle Magnolia Texas
5. Field survey volunteer from The Affiliated High School of Peking University Beijing China
6. Field survey volunteer from Weizhou Island Beihai China