bubble feeding

bubble feeding
the entrapment of a school of fish (or krill) by whales. A series of bubbles are blown out by the whale as it swims to the surface. The bubbles form a ringing curtain that rises to the surface of the water and concentrates the prey in the center. The whale charges through this curtain with its mouth open, engulfing the fish

Dictionary of ichthyology. 2009.

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