Blue Whale Appetite. How big is a blue whale’s appetite? It is estimated to take 2,200 pounds (1 metric ton) of food to fill a blue whale’s stomach, and during peak consumption periods, they can devour up to 8,000 pounds (3.6 tons) in a single day.
A large appetite and their enormous size means eating up to 150 tonnes of krill a day is completely normal for a pygmy blue whale! The blue whale eugy has been made in association with the western australian museum. It doesn't take much to whet a humpback whale's appetite—just a thousand pounds or so a day of fish, krill, plankton, and the like.
This migration takes place in summer.
As a matter of perspective, the largest land mammal on earth is the african elephant, which weighs about as much as the blue whale's tongue. Weighing in at 200 tons, the blue whale is the largest animal on earth—and it also has the largest appetite. Big appetite for small fish. Whereas smaller sized creatures such as the hummingbird can devour food twice their weight.