Using a sharp knife, cut the skin and all of the bitter white pith off the grapefruit. Working over a bowl, cut in between the membranes to release the sections. Add those sections to a salad bowl.
Add shrimps, olive oil and balsamic vinegar to the salad bowl. Mix the salad to make sure it is well coated with dressing. And voilà! Serve immediately. Bon appétit!
Notes
Please keep in mind that the nutritional information is calculated using a nutrition facts calculator. It is a rough estimate and can vary greatly based on products used.