The blue whale, the largest animal on Earth, primarily feeds on krill, especially during summer in polar seas

 The blue whale, the largest animal on Earth, primarily feeds on krill, especially during summer in polar seas. It lunges with its mouth wide open into swarms of krill, taking in large volumes of water, then filters out the water using baleen plates, trapping the prey. It can consume about 4 tons of krill per day.


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