Seals and Whales
These mammals have many of the same adaptations as penguins which reduce the effect of the cold. They spend the winter in the sea, only coming up for air. Their large round bodies have a small surface area to volume ratio, minimising heat loss. Seals have a thick layer of blubber for insulation and small extremities. In summer they come onto shore and ice floes to bask in the sun and to prey on penguins.
All the whales found in Antarctic waters migrate north to escape the harsh winter when krill is unavailable.
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