Gather all ingredients.
In a large bowl, combine mixed salad greens and cherry tomatoes.
Add diced cucumber and sliced red onion to the bowl.
Toss the vegetables together to mix.
In a separate bowl, combine lime juice, olive oil, salt, and pepper to make a dressing.
Pour the dressing over the salad mixture and toss gently.
Add the cooked shrimp and toss again to combine.
Top the salad with sliced avocado and croutons.
Serve immediately to enjoy freshness.
Garnish with additional lime wedges if desired.