In Photos: The Blue Planet
Take a glimpse at some of the wildlife behind Sir David Attenborough's seminal ocean classic - The Blue Planet.

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Shearwaters
Shearwaters, diving for a bait-ball in the Azores.
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Orca Attack
A killer whale (orca) attacking a juvenile humpback whale.
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Polar Bear
A polar bear sniffs the air, moments after making a kill. The blood still staining its mouth.
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Emperor Penguins
An emperor penguin couple reaffirm their bond in the Antarctic.
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Striped Marlin
A striped marlin eyeballs the camera. Marlins can reach astonishing speeds for an ocean-going animal.
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Angler Fish
A deep-sea angler fish won't win any beauty contests but it is a remarkable animal. The lure protruding from its forehead contains bacteria that can glow, attracting its prey.