Add Yahoo as a preferred source to see more of our stories on Google. Read on to discover the 12-inch-thick throat muscles and a 90-second gulp that power its baleen-filter feeding. The biggest whale ...

Sperm whales are the largest toothed whales in the world, reaching 45 tons and living for decades. Their populations were imperiled by historic whaling practices and they are still considered rare ...

Its appetite hinges on nutrient-rich krill swarms, so climate shifts that shrink krill threaten energy reserves and migration. Read on to discover the 12-inch-thick throat muscles and a 90-second gulp ...