Planet Earth (2006)
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Ocean Deep 

Open ocean, a vast biotope covering two thirds of the planet, some shallow, some as deep as the mountain ranges are high. The ocean has an immense, precariously complex food chain, varying ... See full summary »


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Episode credited cast:
Himself - Narrator (voice)
Narrator - US Version (voice)
Rest of cast listed alphabetically:
Doug Anderson ...
Rick Rosenthal ...


Open ocean, a vast biotope covering two thirds of the planet, some shallow, some as deep as the mountain ranges are high. The ocean has an immense, precariously complex food chain, varying from microscopic animals, like krill, to whales, which ironically feed mainly on the former. Most species swim or float in it, many coming up for air, while other dive in from land or air, often to feed, but also to procreate on the coast, where some species come to lay their eggs. Even the shore is covered with life, largely based on organic matter, such as corpses. Written by KGF Vissers

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Plot Keywords:

ocean | whale | shark | earth | See All (4) »




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Release Date:

25 March 2007 (USA)  »

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[first lines]
David Attenborough - Narrator: Away from all land, the ocean. It covers more than half the surface of our planet. And yet, for the most part, it is beyond our reach. Much of it is virtually empty, a watery desert. All life that is here is locked in a constant search to find food. A struggle to conserve precious energy in the open ocean.
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Planet Earth Theme
Written by George Fenton
Performed by BBC Concert Orchestra
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User Reviews

The Strangest Sights Of All: In The Oceans
5 January 2009 | by (United States) – See all my reviews

Well, I'm sorry to see this fantastic 11-part series come to an end. At least it was ended as it began, in spectacular fashion. There are some sights in here that are so unlike anything else in the previous 10 segments, it will have you dropping your jaw in amazement.

The oceans cover more than half of our planet, states narrator David Attenborough, at the beginning of this amazing episode. "Much of it is virtually empty and beyond our reach: a watery desert." Yet, later in the show we get some idea of the depth and vastness of oceans when we go 500-plus feet down where there is NO light but plenty of strange creatures. We are told that there are 300 volcanoes beneath the ocean surfaces, that some are higher than Mt. Everest! Man, this is hard to fathom, pun intended.

All live in the ocean is one long search for food and to conserve energy.

Among the incredible sights we see is a whale shark. I didn't know there was a fish that was half-whale, half-shark, but here it is: 30 tons of it, and pretty darned ugly and scary. Throughout the 50-minute show, we see different kinds of big predators, from sharks to giant rays to the biggest of them all: the Blue Whale, bigger than the biggest dinosaur which ever roamed the planet. Blue Whales can go up to 200 tons in weight and they eat four million krill a day!

Much of the underwater creatures we see are so odd, so different, that they "defy classification," according to Attenborough. You have to see them to believe them.

Overall, this was an extraordinary episode because many of the creatures in the oceans are almost beyond belief. That, and the incredible vastness of an ocean, are about too much to comprehend. It is truly amazing.

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