Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      cups          olive oil
     1/2  cup           fresh lemon juice
   2      tablespoons   chopped fresh dill
     1/8  cup           fresh horseradish
     1/8  cup           Dijon mustard
                        - salt and freshly ground
                        - black pepper to taste
   1      pound         fresh salmon fillet
                        - boneless -- skinless
   1      pound         fresh tuna
   1      pound         fresh swordfish
   1      pound         large shrimp -- peeled and
                        - deveined
  20      long          bamboo skewers

Preparation:

Make two marinades as follows: Place 1 cup of the olive oil and 1/4 cup of lemon juice in each of two bowls. Add the dill to the first bowl and the horseradish and mustard to the other. Add salt and pepper to both marinades. Cut the salmon, tuna and swordfish into 1/2 by 1/2 by 2 inch pieces. Place the salmon and the swordfish in the horseradish-mustard marinade and the shrimp and tuna in the dill marinade for about 30 minutes. While the seafood marinates, soak the bamboo skewers in cold water. Thread the seafood on the skewers, alternating fish, and beginning and ending with a shrimp. Grill over hot coals for about 2 minutes, turning occasionally.