Plants that can grow exposed to salt water conditions (halophyte) are being grown for biodiesel. One of the most promising crops is salicornia. The plant can be eaten like a vegetable. About 30 percent of the seed is oil, which can be used for biodiesel, or a a cooling oil. The remaining husks can be compressed into a strong building material. The below ground roots will decompose and gradually improve the quality of the soil by adding carbon to it. It's being grown near the shore is places like Eritrea and Mexico. In shore areas like these, the desert like conditions often mean there is a problem with erosion. As sea levels rise, this problem is made worse. Plants like the one being used for biodiesel stabilize the soil and reduce erosions.