Blue Lagoon

1 ounce dark rum
3/4 ounce blue Curacao
2 ounces light rum
1 1/2 ounces pineapple juice
1 1/2 ounces orange juice
2 1/2 ounces sour mix
1 1/4 ounces orgeat syrup
Crushed ice
2 lemon slices

Blend liquors, juices, sour mix and syrup in a blender. Fill two 12-ounce glasses with crushed ice and pour blended liquid over ice. Garnish with lemon slice. Serve with straws.