In a large saucepan, combine water and salt; bring to a boil. Add shrimp. Reduce heat; simmer, uncovered, for 2-3 minutes or until shrimp turn pink, stirring occasionally. Drain. Cool in ice water; drain. Refrigerate until serving.
Meanwhile, in a small bowl, combine the ketchup, lemon juice, zest, horseradish, Worcestershire sauce and pepper sauce. On a serving platter, arrange shrimp in groups of three to resemble dragon claws. Serve with sauce; garnish with lemon wedges if desired.