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Scientists have discovered a record-breaking feeding frenzy in Norway, where over 2 million Atlantic cod consumed 10 million capelin fish. Researchers used acoustic imaging and a new technique to identify the species based on swim bladder sound patterns. The massive group of capelin drew the attention of cod, leading to a feeding frenzy that stretched for miles.

The study's findings were published in Communications Biology, highlighting the importance of understanding marine ecosystems and how warming waters may impact fish populations. While the current capelin population remains high, researchers warn that stress on the species could lead to dramatic consequences.

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Source: https://e360.yale.edu/digest/cod-capelin-norway-feeding-frenzy