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. Ars contacted Etihad Airways to confirm this number, and we will update the story when we receive a response.

Previous notable flights using biofuel have included a Qantas flight that used a 10-percent blend of mustard seed oil, a Virgin Atlantic flight that used a 5-percent blend of fuel made from industrial waste gas, an Alaska Airlines flight that used a 20-percent blend of fuel made from waste wood from Pacific Northwest timber harvests, and a series of United Airlines flights that used a 30-percent blend of biofuel from various sources.