“Summer" is the third episode in the Frozen Planet series about the Earth’s polar regions. The episode begins by discussing the sun never setting during the summer in the polar regions.
first mention of Antarctic animals in this episode is the Antarctic fur
seals breeding on the South Georgia Islands. The Antarctic fur seals
give birth and within a week mate again. There is footage of bulls
(males) fighting for control of a harem (group of female seals).
King Penguins of South Georgia are featured next. Cooling off in the
summer heat of 60 degrees is discussed. The penguins cool off by lying
down to let the breeze cool their feet. They also show elephant seals
covering themselves in black sand to cool them off and use as a sun
screen. To avoid overheating the penguin chicks cool off in shallow
water and mud.
Near the end of the episode, fall arriving in
Antarctica is discussed starting with how the ice begins to increase
surrounding the continent. Emperor Penguins are then featured. The
penguins are shown taboggoning to reach their colony inland. The
females pass the eggs to the males before heading back to the sea. The
males huddle together through the winter.