Chop the peeled and clean prawn into pieces then add to the medium bowl. *WASH YOUR HANDS*
Next, Juice all of the citrus (Lemon, limes, oranges) and add to the medium bowl. Mix, and place into the fridge while you work on the rest of the ingredients.
Chop the rest of the ingredients and add to the large bowl. (Tomatoes, avocado, red onion, mango, cilantro, jalapeño) Deseed the tomatoes. For less heat, also deseed the jalapeño.
Add the shrimp and citrus to the large bowl, mix well. Add a pinch of salt to taste.Place back into the fridge and allow to cure for at least one hour, or until the shrimp is slightly pink and firm.
Serve chilled with Tostones... AND DONE!!!