Fast Surface Feeding Sets Sei Whales Apart From Other Rorquals

Sei whales often feed at the surface with rapid, skimming motions rather than deep lunges.

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Sei whales are sometimes observed swimming just below the surface with mouths partially open while feeding.

Unlike blue whales that perform dramatic deep lunge feeding, Balaenoptera borealis frequently uses a technique known as skimming, moving quickly through dense patches of copepods near the surface.

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This feeding method reduces energy expenditure while exploiting concentrated prey layers that form during seasonal plankton blooms.

Their adaptability in feeding style helps them thrive in temperate waters where prey distribution can shift rapidly.

Source

National Geographic

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