NOVA
Season 30 Episode 15 - Deep Sea Invasion
In 1989 marine biologist Alexandre Meinesz went diving off southern France and was stunned by what he saw: a dense blanket of waving green fronds stretching around him in every direction on the seabed. At first Meinesz had no idea what it was. Then he made the alarming discovery that a tropical alga had taken root in the cold water of the Mediterranean, wiping out native sea life wherever it grew. "Deep Sea Invasion" follows Meinesz on his scientific detective hunt to discover the source of this deadly organism, his uphill battle to alert authorities to its danger, and the struggle to find a non-toxic way to control it.
Episodes in Season 30
Killer Disease on Campus
55 min
Mysterious Life of Caves
55 min
Lost Roman Treasure
55 min
Galileo's Battle for the Heavens
55 min
Volcano's Deadly Warning
55 min
Sinking City of Venice
55 min
The Orchid Hunter
55 min
Spies That Fly
55 min
Last Flight of Bomber 31
55 min
Ancient Creature of the Deep
55 min
Battle of the X-Planes
55 min
Mountain of Ice
55 min
Lost Treasures of Tibet
55 min
Dirty Bomb
55 min
Deep Sea Invasion
55 min
Secret of Photo 51
55 min
