Back to Show
Nature
Why Does San Diego's Ocean Glow Blue?
Just off San Diego's shore, single-celled algae called dinoflagellates start to reproduce and if disturbed, a chemical reaction within the cell creates a tiny spark of light. When the conditions are right, the algae multiply and the coastal waters glow blue.
Support Provided By
Season

52:29
Sir David Attenborough explores London’s Natural History Museum, where extinct creatures come alive.

52:51
A team of scientists and filmmakers explore the Antarctic waters to learn more about killer whales.

Unlock with PBS Passport
53:33
The change of seasons brings turmoil and tough choices to the three big cat families.

Unlock with PBS Passport
53:33
Lion, leopard and cheetah parents attempt to co-exist and raise their cubs in Botswana.

Unlock with PBS Passport
53:03
An intimate portrait of Sir David Attenborough’s life and career in natural history.

Unlock with PBS Passport
53:33
Follow three orphaned desert lion cubs as they navigate the brutal Skeleton Coast of Namibia.

Unlock with PBS Passport
53:33
Experience San Diego, where dazzling biodiversity thrives amidst a transformed urban landscape.

Unlock with PBS Passport
53:31
Discover the wildlife of Transylvania, a mysterious region hiding some of Europe’s last wilderness.

Unlock with PBS Passport
53:45
In Congo, filmmaker Vianet Djenguet comes face to face with the forest’s largest gorilla.

53:27
See the spectacular wildlife of The Burren in Ireland through the eyes of a pine marten.

Unlock with PBS Passport
53:29
Witness a moving view into the effects of war on animals and the humans who help them.

Unlock with PBS Passport
53:18
The most famous grizzly bear in the world attempts to raise cubs amid conflicts with people.