• 2001-10-10T19:00:00Z on BBC One
  • 51m
  • 3 hours, 20 mins (4 episodes)
  • United Kingdom
  • English
  • Documentary
Sir David Attenborough narrates this critically acclaimed series that dives deep into the marine environment of Planet Earth. Although two-thirds of the world's surface is covered with water, scientists know less about the oceans than they do about the surface of the moon. This limited series travels from various coasts to the poles to examine watery denizens ranging from the gigantic blue whale to microscopic coral polyps.

4 episodes

2001-10-10T19:00:00Z

1x05 Seasonal Seas

1 (1x05) Seasonal Seas

  • 2001-10-10T19:00:00Z50m

As the days grow longer, billions of microscopic plankton bloom under the blazing sun. Here in the temperate seas, three-ton basking sharks graze among forests of giant kelp - the fastest growing plant in the world. The forests harbor thousands of other animals, including sea otters, brilliantly colored anemones, squid, and exquisite leafy dragons. But as the year wears on, storms rage in the icy sea... a desperate challenge for the animals that remain.

2001-10-17T19:00:00Z

1x06 Coral Seas

2 (1x06) Coral Seas

  • 2001-10-17T19:00:00Z50m

Bathed in bright sunlight and warm clear water, the coral reef is a rich oasis of life - the rainforest of the sea. Bizarrely adorned harlequin shrimp carry off a starfish several times their size, while haunting songs reverberate around the reef, heralding the arrival of humpback whales. Shimmering schools of brightly colored fish battle for territory in this competitive world where you have to stand out to survive.

2001-10-24T19:00:00Z

1x07 Tidal Seas

3 (1x07) Tidal Seas

  • 2001-10-24T19:00:00Z50m

The sun and moon move billions of tons of water with every turn of the tide. The strongest tides empty entire bays, smash trees on riverbanks, and strand sea creatures on suddenly dry land. Weaker tides control the movements of huge numbers of fish, coaxing stingrays though astounding underwater arches. And as the water recedes, the tide can create unbelievable landscapes - like a sparkling world of salt crystals inhabited only by tiny shrimp and bright pink flamingos.

2001-10-31T20:00:00Z

1x08 Coasts

4 (1x08) Coasts

  • 2001-10-31T20:00:00Z50m

From rocky cliffs to gentle dunes, the coasts are always changing. Day in and day out, they are battered by crashing waves. Seabirds come here by the thousands to nest, while baby turtles hatch and race to the sea, pursued by hungry predators. Young sea lion pups are born and play on the sand - until a killer whale attacks, crashing in on the surf. But when breeding season is over, life returns to the sea and the shores are empty once again.

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