Why is the emperor penguin so big?

Answer 1

i do not know tell me???

Answer 2

Emperor penguins are the largest of all penguin species because their size helps them survive in the extreme cold of Antarctica. Their large size helps them retain body heat, their thick feathers provide insulation, and their large body mass allows them to store energy reserves for long periods of fasting while breeding. The size also helps them swim efficiently in the cold waters, where their streamlined bodies help them move through the water with minimal energy expenditure.