Krill Availability Can Supplement the Sei Whale Diet in Some Regions

Although copepods dominate their diet, sei whales can adjust to feast on krill when conditions allow.

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Diet composition studies often rely on stomach content analysis and stable isotope data.

Balaenoptera borealis primarily consumes copepods but may opportunistically feed on euphausiids and small schooling fish when prey composition shifts.

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💥 Impact (click to read)

Dietary flexibility enables sei whales to respond to seasonal or regional variations in zooplankton abundance.

Such adaptability may buffer the species against short-term ecosystem fluctuations, though long-term climate change remains a concern.

Source

National Marine Mammal Laboratory

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