Our planet is a blue planet: over seventy percent of it is covered by the sea. The Pacific Ocean alone covers half the globe.

You can fly across it non-stop for twelve hours and still see nothing more than a speck of land.

Still, the health of our oceans is under threat. They are changing at a faster rate than ever before in Human history.

Countless numbers of the reefs that have flourished for millennia lie in ruins. Overfishing has emptied the surface seas.

The seas have not escaped the impact of global warming either. Half the World’s coral reefs have been affected by bleaching in recent years. In the Arctic, ice has been reduced by 40% in the last 30 years.

In need of a safe retreat, these walruses can no longer rely on sheets of ice as resting spots and instead must fight for space on land or floating, diminutive rafts of ice.