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Longitudinal photographic survey tracks abundance trends in Pacific Coast Feeding Group gray whales from 1996 to 2024, highlighting long-term population dynamics in the Pacific Northwest.
The following report provides an updated estimate of abundance for Pacific Coast Feeding Group (PCFG) gray whales through 2024 using data derived from a collaborative, multi-year photographic survey of gray whales in the eastern North Pacific. The data time series spans 29 years (1996-2024) and 15 survey regions along the west coast of North America from southern California to Kodiak, Alaska. The present analysis focuses on data for animals observed between 1 June and 30 November within the PCFG range from northern California to northern British Columbia, Canada, including the western Strait of Juan de Fuca.
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Mahoney et al. (2026) studied this question.
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