In a small bowl, whisk together the coconut aminos, rice vinegar, grated fresh ginger, minced garlic, and sriracha to create the dipping sauce and set aside.
Drain the canned tuna thoroughly and place it in a medium bowl, seasoning it with the sea salt and black pepper.
Julienne the cucumber, red bell pepper, and carrots into thin matchsticks, and finely shred the purple cabbage.
Fill a large shallow dish with warm water and submerge one rice paper sheet for about 10-15 seconds until it is pliable but not completely mushy.
Lay the damp rice paper flat on a clean surface and place a portion of the tuna, avocado slices, and mixed vegetables in the center.
Fold the bottom of the rice paper over the filling, tuck in the sides, and roll tightly to seal the wrap.
Repeat the process for the remaining sheets and serve immediately with the prepared ginger-soy dipping sauce.