1. Geospatial Ecology of Marine Megafauna Lab, Oregon State University, Corvallis, Oregon, USA
2. Ocean Ecology Lab, Marine Mammal Institute, Department of Fisheries, Wildlife and Conservation Sciences, Oregon State University, Corvallis, Oregon, USA
3. Department of Statistical Science, Duke University, Durham, NC, USA
4. Marine Mammal Institute, Department of Fisheries, Wildlife and Conservation Sciences, Oregon State University, Corvallis, Oregon, USA