Begin by draining the canned tuna and flaking it into a medium mixing bowl.

Slice the English cucumber and small red onion thinly.

Chop a handful of fresh cilantro and set aside all prepped ingredients.

In a large salad bowl, combine the sliced cucumber, halved avocados, flaked tuna, sliced red onion, and chopped cilantro.

Gently combine ingredients without mashing the avocado too much.

Drizzle with lemon juice and olive oil, then sprinkle with salt and pepper.

Gently toss the salad to combine flavors.

Serve immediately, either on its own or in lettuce wraps or as a sandwich filling.