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.

Only two blue whale births have ever been recorded in human ... In summer, blue whales migrate to feed in colder regions where krill is plentiful: for example, off California.

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 ...

The blue whale is the biggest animal that has ever ... These whales use their baleen plates to filter tiny animals — such as plankton, krill and small fish — out of the water.

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 ...

Blue whales are the largest animals to have ever lived. The largest of these giants was a true behemoth, equaling the ...