Steamed Halibut Salad with Honey Mustard Vinaigrette

Ingredients: 1 lb. fresh halibut 1 cup basil ⅓ cup cilantro, chopped ¼ cup sunflower seeds ¼ cup extra virgin olive oil (plus more for dressing) ⅛ teaspoon sea salt (plus more for seasoning) ⅛ teaspoon ground black pepper 1 ruby red grapefruit, juiced 2 garlic cloves 2 tablespoons mustard 2 tablespoons honey 2 sprigs