Enlarge / Glasswort bush (Salicornia europaea), Chenopodiaceae. (credit: De Agostini/Getty Images) On Wednesday, an Etihad Airways Boeing 787 in Abu Dhabi embarked on a roughly seven-hour flight to Amsterdam with its tank full of a mixture of jet fuel and biofuel. The biofuel was derived from oil pressed out of Salicornia plants, which require saltwater to grow. Gulf News reported that a full 50 percent of the jet fuel needed to take the plane to its destination was biofuel, which is an extraordinarily high ratio of biofuel to jet fuel, if this report is correct.