For the salad, bring water to a boil and add the quinoa and sea salt. Cover, reduce heat to medium-low and simmer 15 minutes. Turn off the flame and set aside to cool, fluffing with a fork periodically.
Bring 1 cup water to a boil in a saucepan, add the corn and simmer 2 to 3 minutes. Drain and rinse under cold water. Place the corn, tomatoes, red onion, radish and cucumber in a mixing bowl. Add the quinoa to the mixing bowl.
To make the dressing, combine all ingredients in a blender and pulse until smooth. Stir the dressing into the salad. Serve room temperature or chill for 1 hour.
Per serving - 270 calories, 12 g fat (39% calories from fat), 7 g protein, 36 g carbohydrate, 9 g fiber, 0 mg cholesterol, 390 mg sodium