UNDER A CRACKED SKY

Under eight feet of Antarctic sea ice lies the clearest water on Earth. Plunge through a small hole in the ice to dive with seals, explore ice caves, glide past stalactites of frozen seawater and swim over a rocky black seabed crawling with life. Under a Cracked Sky was narrated and photographed by two research divers at McMurdo Station, one of whom has more experience under the ice than anyone else on the planet.

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