Welcome to the ocean's dark side. The series goes deep to explore forces that have terrorized our planet throughout history. Beneath the surface, Tides and Currents, Predators, Lethal Pressure and Killer Shockwaves create ongoing and ominous threats. Five deadly forces, four turbulent episodes, one powerful surge of entertainment.

Welcome to the ocean's dark side. Building on HISTORY's successful Underwater Universe special, this new limited series goes deep to explore undersea forces that have brought terror and destruction to our planet throughout history. Beneath the surface of our life-giving oceans, Tides and Currents, Predators, Lethal Pressure and Killer Shockwaves create ongoing and ominous threats. Photo-real CGI animation, heart-stopping cinematography and submersible expedition footage shed new light on hard science, dramatic historical stories and riveting first-person accounts. Five deadly forces, four turbulent episodes, one powerful surge of entertainment.