The Seaweed that took the Sea.

At least 32,000 acres of seabed, mostly in the Mediterranean, are now infested with the aquarium strain of Caulerpa taxifolia. Last night on Nova they showed how it grows an inch a day, and how it's high levels of a certain toxin allow it to grow without the threat of being eaten. This program is so entertaining, it's amazing to think that they can hold your attention with the subject of a seaweed. Pictured below is "Caulerpa taxifolia", the threat to the reefs.