Southern Alaska killer whales eat a remarkably diverse diet, observations reveal
Phys.org
February 24, 2026
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Fish-eating killer whales in southern Alaska exhibit an unexpectedly diverse diet that varies significantly by season and location, according to a study published in *Ecosphere*. Researchers found that these marine predators primarily consume salmon and groundfish, with their prey selection shifting depending on the time of year and specific foraging hotspots. This dietary flexibility highlights the adaptability of killer whales and underscores the importance of understanding how environmental factors influence their feeding habits.
The study revealed that while salmon dominates their diet in certain areas, such as along the continental shelf, groundfish like Pacific cod and herring predominate elsewhere. This regional variation in prey types suggests that killer whales may target different species based on availability and energy needs. Seasonal changes also play a crucial role, with the whales adjusting their diet to maximize efficiency during migrations and feeding periods.
This research is significant for several reasons. First, it provides valuable insights into the ecological roles of
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Originally published on Phys.org on 2/24/2026