Simple shrimp salad

12 grain bread (100% whole grain whole wheat flour, water, brown sugar, wheat gluten, yeast, rye, oats, barley, corn millet, rice flour, canola oil (non-hydrogrenated), triticale, sunflower nutmeats, sesame seeds, flaxmeal, buckwheat, salt, raisin juice concentrate, contains 2% or less of the following: cultured whey, vinegar, soy lecithin), shrimp (shrimp, salt, sodium tripolyphosphate), mayonnaise (soybean oil, whole eggs, vinegar, egg yolks, water, salt, dextrose, sugar, lemon juice, calcium disodium edta used to protect quality, natural flavors), celery, red onion, butter (cream and salt)