Cook them like usual beans but the it will be marine flavor !
Sea-haricot thrives in places where the water turn-over rate is high. It is gathered from March to October during high tide periods. Is is appreciated for its delicious marine taste.
Tasting tip : rinse and drain with mild water, and cook as reguler haricots. You can warm them up in a steam oven or cook them in a pan with oil and butter. they can also be used to make mixed cold salads.