For those getting the whole shrimp, make sure to devein each one. To do so, cut down the top of the crustacean and remove the thin dirty vein. Do not remove the shell.
Finely chopping an entire batch of parsley and cilantro. Next, add minced garlic, crushed red pepper flakes, salt, red wine vinegar, freshly squeezed lemon juice and olive oil. Mix it all together.
Set aside about 1/4 of the sauce for later usage and pour the rest on the deveined shrimp. Make sure to mix thoroughly to cover all pieces.
Double skewer the marinade shrimp.
Preheat the grill for 400 degrees and set for direct heat.
Place the shrimp skewers on the grill and flip after 1.5 minutes.
Once you have removed the grilled whole shrimp off the grill, brush them with the remaining chimichurri sauce for some extra freshness.