Cut Your Mango in half along the side of the pit. With your halves, slice vertically, then horizontally making cubes.
Push the center of the mango from the skin side towards you so it makes all the cubs "pop" out, then with a spoon scoop out the mango and place in a bowl.
Dice your tomato, cucumber, cilantro, jalapeno, and onion.
Add all of it into the same bowl with the mango, squeeze the lime juice, and add salt.
Mix it all together and you have a lovely cucumber mango salsa! Place in the fridge until you're read to use!