1 1/2 pounds unpeeled fresh jumbo shrimp |
1/3 cup fresh grapefruit juice |
1/4 cup fresh orange juice |
1/4 cup coarsely chopped fresh cilantro |
1/4 cup coarsely chopped fresh mint |
2 tablespoons fresh lime juice |
1/4 teaspoon salt |
1/4 teaspoon cracked pepper |
olive oil-flavored vegetable cooking spray |