Spicy Crab and Melon Salad

Name: Spicy Crab and Melon Salad
Yield: 4 Servings
Ingredients: 1/3 cup mayonnaise; 2 tablespoons chopped fresh tarragon plus sprigs for garnish; 1 tablespoon fresh lemon juice; 2 1/2 teaspoons Old Bay seasoning or other seafood seasoning, divided; 2 1/2 cups fresh lump crabmeat, picked over (about 12 ounces); 1 large cantaloupe, quartered, seeded (about 4 pounds)