The ocean covers most of our planet.

It looks endless.

It moves constantly.

And it appears impossible to exhaust.

But beneath the surface, parts of the ocean are losing something every living creature depends on.

Oxygen.

In The Ocean Is Running Out of Breath, we explore the growing problem of ocean deoxygenation and the strange, sometimes invisible processes that can turn healthy marine environments into oxygen-starved zones.

Oxygen enters the ocean primarily through contact with the atmosphere and through photosynthesis by marine organisms such as phytoplankton and algae.

But oxygen is not distributed evenly.

Ocean currents move it.

Temperature affects how much oxygen seawater can hold.

Biological activity consumes it.

And changing ocean conditions can alter ...