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The Blue Planet

Season 1 Episode 5: Seasonal Seas

Shafts of sunlight are the vital source of energy used by the countless billions of plankton that grow every spring and summer in the world's temperate sea, the richest of all habitats.

Season 1 Episodes:

Episode 1 Ocean World

1. Ocean World

Aired: Sep 12, 2001

The ocean's influence dominates the world's weather systems and supports an e...

Episode 2 The Deep

2. The Deep

Aired: Sep 19, 2001

The deep sea, which gets darker with increasing depth until no more sunlight ...

Episode 3 Open Ocean

3. Open Ocean

Aired: Sep 26, 2001

Endless blue stretches in every direction. The sea bed is a staggering eight ...

Episode 4 Frozen Seas

4. Frozen Seas

Aired: Oct 3, 2001

Life on the edge of a frozen sea is tough. Ice at both poles is constantly mo...

Episode 5 Seasonal Seas

5. Seasonal Seas

Aired: Oct 10, 2001

Shafts of sunlight are the vital source of energy used by the countless billi...

Episode 6 Coral Seas

6. Coral Seas

Aired: Oct 17, 2001

Coral reefs are the rainforests of the sea; fish compete for food, territory ...

Episode 7 Tidal Seas

7. Tidal Seas

Aired: Oct 24, 2001

Tidal marshes are one of the most productive parts of the world. Numerous pla...

Episode 8 Coasts

8. Coasts

Aired: Oct 31, 2001

The boundary between land and sea is an exciting place, with seabirds, turtle...

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Info about The Blue Planet

Current Status: Ended

Network: BBC One

Production Country: United Kingdom

Genres:Documentary