Photo of the Day

an aerial of Caroline Island in the Pacific Ocean
September 10, 2014

On the Line

An underwater paradise in the remote Pacific Ocean that includes the sea around the southern Line Islands (Caroline Island is seen here) will be protected—thanks in part to National Geographic’s Pristine Seas project. Led by Explorer-in-Residence Enric Sala, the project is an ongoing effort to document and conserve what’s left of the planet’s least spoiled marine environments.

See more pictures from the September 2014 feature story “A World Apart: The Southern Line Islands.”

See a map of all Pristine Seas expeditions and learn more about the initiative »

See more pictures of the southern Line Islands »

Photograph by Brian Skerry, National Geographic

Go Further

Subscriber Exclusive Content

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history