The Crystal Ocean

Even the most sophisticated, modern icebreaker cannot be assured of a path through.

– Narrator Jeffrey Thomas

Eventually the sea will freeze solid, and until summer's return the south of the planet will be isolated within a vast white shell ... for eight months the Southern Ocean will become a twilight zone, neither sea nor land. From late February the ice front advances north to claim an extra two and a half miles of ocean every day.

– Narrator Jeffrey Thomas

By the time the freezing stops, ice will have gripped almost seven million square miles of ocean, an area equal to the land mass of South America ... the South Pole ice cap, already the world's fifth largest continent, will double in size in just a few months.

– Narrator Jeffrey Thomas