Chop the cucumber, strawberries, grapes, and red bell pepper into bite sized chunks.
Chop the basil leaves.
Juice the lime. In a small bowl, combine the lime juice, olive oil, and salt.
Place the chopped fruits, vegetables, and basil in a large bowl. Add the sunflower seeds.
Pour the dressing into the bowl and toss to combine everything thoroughly.
Spoon the salad onto romaine lettuce leaves for a fresh, pretty presentation. Enjoy!