Balaenoptera edeni Lunge Feeding | Thailand

The is an adult female Eden’s whale (Balaenoptera edeni) engaged in lunge-feeding behavior with her calf. The mother is on the left side of the image. The pair swam in a large circle to herd fish (likely Sardinella sp.), slapping the ocean surface once in a while presumably to drive the fish forward. When there are are enough fish swimming inside the arc created by the whales, they execute a quick turn so that their mouths open directly into the line of motion, thereby capturing a large mouthful of fish. The crest of the wave created by the arc of the whales’ rapid turn is visible behind them. Several species of terns take advantage of the whales’ efforts. This lunge-feeding behavior began to appear in the Gulf of Thailand in 2017 and has been the dominant feeding methodology during 2018.

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Filename: eden-whale-balaenoptera-edeni-lunge-feeding-thailand-201810-0667.tif
Copyright: Copyright Tony Wu. All rights reserved. No duplication, reproduction or usage without prior written permission.
Image Size: 5917x3328 / 56.4MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Whale Bryde's Whale Eden's Whale Animalia Chordata Mammalia Cetacea Mysticeti Balaenopteridae Balaenoptera edeni edeni CITES Appendix 1 Data Deficient: IUCN Red List Filter Feeder Marine Mammal Mysticete Rorqual Mother and Calf Feeding Foraging Hunting Pacific Gulf of Thailand
Contained in galleries: Bryde's Whales, Eden Whales

The is an adult female Eden’s whale (Balaenoptera edeni) engaged in lunge-feeding behavior with her calf. The mother is on the left side of the image. The pair swam in a large circle to herd fish (likely Sardinella sp.), slapping the ocean surface once in a while presumably to drive the fish forward. When there are are enough fish swimming inside the arc created by the whales, they execute a quick turn so that their mouths open directly into the line of motion, thereby capturing a large mouthful of fish. The crest of the wave created by the arc of the whales’ rapid turn is visible behind them. Several species of terns take advantage of the whales’ efforts. This lunge-feeding behavior began to appear in the Gulf of Thailand in 2017 and has been the dominant feeding methodology during 2018.