Filmed over four years covering every continent and ocean, this sequel to 2001's multi-award winning The Blue Planet promises to take viewers on a revelatory and magical journey into the greatest, yet least known parts of our planet-our oceans. By using breakthroughs in science and cutting-edge technology to explore this final frontier, the series will reveal the astonishing characters, otherworldly places and extraordinary new animal behaviours. Warm and compelling stories about marine habitats and their characterful inhabitants will build people's emotional relationship with our oceans and bring a new perspective to this little-known world.