Ocean
The ocean covers most of our planet, yet much of it remains difficult to reach. Travel from waves and reefs to the deepest trenches, where pressure, darkness and life become increasingly strange.
Where Ocean Meets Sky
The ocean surface is always moving, shaped by wind, gravity and the pull of the Moon.
Currents That Move a Planet
Ocean water is constantly circulating, carrying heat, nutrients and living things around the globe.
Coral Cities
Coral reefs look like colourful rocks, but they are living structures built by countless tiny animals.
Giants of the Sea
The ocean is home to the largest animals ever known and some of the most extraordinary long-distance travellers.
Sharks and Hunters
Sharks have survived for hundreds of millions of years by evolving senses and bodies finely tuned for hunting.
Into the Deep
Below the sunlit surface, darkness grows, pressure rises and ordinary rules for life begin to change.
Life Without Sunlight
Some ocean ecosystems run on energy from inside Earth instead of energy from the Sun.
The Deepest Places
Ocean trenches plunge kilometres below ordinary seafloor, into some of the least accessible places on Earth.
Ocean and Planet
The ocean is not just a place on Earth. It is one of the systems that keeps the whole planet working.
The Ocean We Still Don't Know
Even after centuries of exploration, the ocean continues to reveal species, landscapes and processes we did not know existed.