Cut the tuna into small bite sized cubes and place in a bowl
In a bowl whisk together the sesame oil, coconut amines or tamari, spring onions and sesame seeds. Pour over the tuna and allow to marinate in the fridge for 1-2 hours.
Peel the mango and cut it into small bite sizes cubes. Wait until just before serving to cut up the avocado so the color stays bright.
After 2 hours, combine the tuna, avocado, mango and chopped macadamia nuts. Top with spring onions and serve.