1. Department of Biology, University of North Dakota, 10 Cornell Street, Stop 9019, Grand Forks, ND 58201, USA.
2. droneMetrics, 7 Tauvette Street, Ottawa, ON K1B 3A1, Canada.
3. Aquatic Megafauna Research Unit, Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, Murdoch 6150, Australia.
4. Environmental and Conservation Sciences, Murdoch University, Murdoch 6150, Australia.
5. Marine Robotics and Remote Sensing Lab, Duke University Marine Laboratory, Division of Marine Science and Conservation, Nicholas School of the Environment, Duke University, Beaufort, NC 28516, USA.
6. Department of Natural Resource Sciences, McGill University, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada.