seafood salad recipe

Ingredients: 200g shrimp, peeled and deveined 200g crab meat 200g calamari, cleaned and sliced 1 cup mixed salad greens (lettuce, arugula, spinach, etc.) 1 cucumber, sliced 1 avocado, diced 1 red bell pepper, sliced 1 small red onion, thinly sliced 1 lemon, juiced 2 tablespoons olive oil