In a large mixing bowl combine the avocados, sea salt, and lemon juice. Add the spaghetti squash shreds, tuna, mushrooms and kalamata olives. Using a large spoon, gently stir together until evenly coated with avocado ‘dressing’.
Serve with a slice of fresh lemon.
Store leftovers in a glass container in the fridge for up to 5 days.