The Pacific Ocean's mysterious deep sea terrain is as varied as the land mirrored above.

Centuries of seismic activity lined the Coral Triangle's bays with volcanic ash and mud.

The Great Barrier Reef is so big it can be seen from space.

Across the Pacific, long chains of atolls support life on the remnants of ancient volcanoes.

Hundreds of millions of years of volcanic activity, isolation and powerful currents have shaped Antarctica and its surrounding islands into varied and fascinating terrains.

Every animal in Antarctica answers the call of the seasons, and the continent itself is vastly different in Summer and Winter.