In a large saucepan, bring water to boil.While water is boiling, heat oil in a small saucepan over low heat. Add red pepper flakes and cook, stirring occasionally for approximatley 3 minutes. Strain oil into a small bowl, discarding the red pepper flakes and whisk in clam and lime juices. Set aside dressing mixture.
When water has come to a boil drop in shrimp and reduce heat to medium-low. Simmer approximately 2 minutes or until shrimp turn opaque. Drain shrimp and rinse under cold water to prevent further cooking, drain well.
In a large bowl, transfer shrimp and add cabbage, carrot, bean sprouts, peanuts, coconut, and scallion. Pour dressing over salad and toss to coat.