Separate the leaves off the parsley, mint and lettuce. Wash well under cold water and pat dry with paper towel or use a salad spinner. Chop the parlsely, mint and lettuce into bite size pieces. Set aside. Rinse the cucumbers well and slice them. Dice the tomatoes. Crush garlic and mix with the sea salt, oil and lemon juice. In a large serving bowl, mix the vegetables and top with the bread fragments. Pour the dressing and toss just before serving. Serves 4.