The oceans encompass more than 90% of our planet’s habitat, yet we know less about these blue depths than about the moon. When every deep sea research dive reveals a new species, you have to wonder what remains to be discovered.

By presenting exciting new projects worldwide, this documentary reveals the latest developments in deep sea science. And with Argo, a global array of more than 3,000 free-drifting profiling floats that measures temperature, salinity and velocity, scientists are learning more about the upper ocean than ever before.  Exotic creatures, natural resources and answers to pressing environmental issues await. In a world of dwindling resources and a changing climate, we need to know more about the depths of the element that makes this planet a blue one.