South Beach Chopped Salad with Tuna

1/2 cup cucumber, chopped

1/3 cup tomatoes, chopped

1/3 cup avocado, chopped

1/3 cup celery, chopped

1/3 cup radish (labanos), chopped

1 cup romaine lettuce

4 teaspoons extra virgin olive oil

2 tablespoons lime juice

2 cloves garlic, chopped finely

1/2 teaspoon black pepper