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The Earth's large, deep calcareous caves are virtually inaccessible and therefore barely explored - requiring expert diving where flooded. Some of its wildlife is as strange and specific as in the deep, darkest part of the ocean, whe
Movie rating: 8.7 / 10 (2959)
Directed by: David Attenborough - Alastair Fothergill - Gary Parker
Writer credits: David Attenborough - Gary Parker - Gary Parker
Cast: David Attenborough - Sigourney Weaver - Huw Cordey - Chadden Hunter - Thomas Anguti Johnston
AKA: Planet Earth Extremes, Планета Земля, Planet Earth, Planet Zemlja