In the final freeze of an Antarctic winter, green tails wave across a star-full sky, as if to farewell endless nights. If this world looks empty, look closer ... Penguins trek across the ice to their winter homes. As the temperature warms, birds fly above on their long migrations. And with the advent of summer, beneath an iceberg, the sea is teeming with life. Ocean, sky, snow and ice - minute greens and giant blues - dance a delicate dance in this evocative portrayal of the life cycle of an iceberg.