This is a light, refreshing salad I created to cope with the summer heat. I really like the combination of tart grapefruit with buttery avocado and crunchy almonds. The shrimp adds enough protein for this to be considered a meal. Since it's summer, I tossed the shrimp on the grill for an added smoky flavor, but shrimp sautéed in a little olive oil would be just as delicious. The dressing is very light and just enough to tie the whole salad together. My grapefruit was fairly sweet, but if yours are too tart, you can always add a little honey to the dressing.