6 Questions
What is the main food source for blue whales?
Krill
How many calories can an adult blue whale consume in a single mouthful?
More than 450,000 calories
What is the approximate length of krill, the main food source for blue whales?
Half an inch
How do blue whales hunt for krill?
Filter feeding
What is the main challenge blue whales face due to their massive size?
The need for an enormous amount of food
What two creatures are mentioned as potential predators of adult blue whales?
Orcas and humans
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