
Bring a large pot of water to a boil. Add the shrimp to poach for about 2-3 minutes.
Drain the pot and place shrimp in a separate, new bowl.
Add the onion, tomato, lime juice, cilantro, and cocktail sauce. Add salt to taste.
Toss the ingredients together, cover, and refrigerate for a few hours.
Add diced avocado to the mixture before serving. Enjoy!