Cook the pasta according to package instructions until al dente. Drain and set aside to cool.
In a large mixing bowl, combine the cooled pasta, diced cucumber, tomatoes, chopped onion, grated carrot, and drained tuna.
In a separate small bowl, whisk together the olive oil, minced garlic, vinegar, mayonnaise, black pepper, water, curry powder, and lemon juice until well combined to make the dressing.
Pour the dressing over the pasta salad and toss until everything is evenly coated.
Taste and adjust seasoning with salt . You can add more lemon juice or black pepper according to your taste preference.
Garnish with fresh parsley or cilantro, if desired.
Serve chilled and enjoy your delicious and nutritious Pasta Salad!