Slice the onions, cucumber, and radish up thin. A mandolin works great for this!
Halve the shrimp. Add to a bowl with lime juice and refrigerate, stirring often.
Blend the marinade. Combine with the shrimp and return to the fridge.
Combine the marinade, shrimp, and sliced veggies in a serving bowl.
Serve your shrimp aguachile with crackers and tortilla chips. Get dipping!