There's a fascinating insight in the current Hakai Magazine into how humpback whales - both in groups and solo - use sound to round up herrings for dinner.
"When a group of humpbacks finds a school of herring, typically one whale dives and slowly circles the fish, releasing bubbles from its blowhole to form an ephemeral bubble net that corrals the fish. At the same time, another whale trumpets the feeding call. Trapped by the bubble net, the increasingly frenetic fish ball up. Once the feeding call stops, the whales swim up through the trapped herring, devouring them as they power to the surface."
The article "The whale that dines along" gives examples of solitary whales using the same song sounds
"When a group of humpbacks finds a school of herring, typically one whale dives and slowly circles the fish, releasing bubbles from its blowhole to form an ephemeral bubble net that corrals the fish. At the same time, another whale trumpets the feeding call. Trapped by the bubble net, the increasingly frenetic fish ball up. Once the feeding call stops, the whales swim up through the trapped herring, devouring them as they power to the surface."
The article "The whale that dines along" gives examples of solitary whales using the same song sounds
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