Pre-heat the grill to medium heat.
Combine the lemon juice and vinegar in a bowl. Add the sliced garlic and shallot to the bowl and let them marinate for 5 minutes.
Roughly chop the herbs so you can pack them into the measuring cups.
Once packed, combine the herbs, salt, coriander and shallot and garlic mix in a food processor.
Add in the extra virgin olive oil and then blend to chop roughly.
Divide the chimichurri between two bowls. One will be used on the shrimp directly and the other can be set aside for a garnish sauce once the shrimp is cooked.
Prep the shrimp by removing it from the packaging. Make sure it is fully thawed. If not, you can place it in a cold bowl of water for 10 minutes.
Add the shrimp to a bowl and then add half of one bowl of the chimichurri mix to the shrimp. Reserve the other half of the bowl.
Add 4-5 shrimp to each bamboo skewer and then grill 3-4 minutes per side. When the first side has cooked, flip the skewer over and baste the other half of the chimichurri in the bowl onto the shrimp skewers. (1/4 of the total mixture.)
Remove the shrimp from the grill and serve immediately with the other bowl of Chimichurri sauce. Additional lemon juice and sea salt as desired.