Our southern oceans are teeming with life, color...and constant danger. Each body of water hosts a bounty of freakishly wild and colorful species, with predators at every turn. In this six-part series, we explore the most life-abundant and visually stunning seas on our planet, above and below the waterline, venturing to places so remote few film crews dare venture. Each episode delivers audiences to worlds so rare, it s hard to imagine they even exist. Join us as we travel to New Guinea, Australia, South Georgia Island and beyond to explore the breathtaking but fragile underwater empires of the southern oceans. Here, a massive concentration of life puts predators and prey in close proximity, but it is the ecological changes, natural and man made, that have even the fittest species fighting for survival. Life here may hang on nothing more than a few degrees of mercury.