Ilustrasi: Daisy Chung, Staf NGM. Sumber: Zeb Hogan Dan Sudeep Chandra, Universitas Nevada, Reno; Allyse Ferrara, Nicholls State University, Louisiana; Ryan Koenigs, Wisconsin Department of Natural Resources
Ilustrasi: Daisy Chung, Staf NGM. Sumber: Zeb Hogan Dan Sudeep Chandra, Universitas Nevada, Reno; Allyse Ferrara, Nicholls State University, Louisiana; Ryan Koenigs, Wisconsin Department of Natural Resources