World champion freediver Marina Kazankova is on a mission.
To free dive the Great Barrier Reef, taking on a series of challenges, from swimming with turtles and giant groper, to diving on ship wrecks and through awesome caves.
Her journey takes her from the Hardy Reef, off the Whitsunday Islands, way south, exploring coral cays, and encountering an array of vibrant coral formations and dazzling sea creatures.
Filmed on glorious 4K, ULTIMATE FREEDIVING: THE GREAT BARRIER REEF is being edited now, timed for a release at MIP in Cannes this April.
6 cameras follow her every dive, from drones above to a series of cameras beneath the waves.