Slice tuna to desired thickness – about 2 inches long, 2 inches wide and ¼ inch thick. Lay out on ice-cold platter. On top of tuna, lay a thin slice of mango and avocado. Over each piece of tuna, drizzle olive oil to taste. Squeeze fresh lime juice over the top of all fish. Sprinkle sea salt, smoked paprika and thinly ribboned mint leaves.
Serve all ingredients extremely cold.