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Aerial surveys of Cook Inlet beluga whales (Delphinapterus leucas) were conducted from 1993 to 2022, excluding 2013. The data includes environmental conditions, time, location, species, and inclinometer angle for each sighting, supporting inter-annual trend analyses. Beginning in 2005, August surveys were added to document calving groups in the upper Inlet.
The dataset excludes survey data from the year 2013. The most specific temporal endpoint (2022) comes from one Data.gov entry, while another source lists 2014.