Initially, there was a large increase in krill, shortly followed by a leap in anchovy abundance. By comparison, blue and fin whale song rose primarily during the years where krill was more plentiful.

The blue whale is famously the largest animal in the world, but this simple fact doesn't do these creatures justice. They ...

Opening their mouths and engulfing the krill swarm, often hundreds of kilograms ... essential for a streamlined species like the pygmy blue whale that has less capacity to store fat and needs ...

Blue whale mother and calf swimming together in ... Blue whales migrate during summer to feed in colder regions where krill is plentiful, like in the waters off California. They return to warmer ...

and detection of their songs plummeted with large decreases in krill abundance. Our analysis of blue whale skin revealed they were foraging over a larger geographic area to find the food they ...

In contrast, blue and fin whale song rose primarily during the years of increasing krill abundance. This distinction of humpback whales is consistent with their ability to switch between dominant ...