If you want to catch a level 10 Salamence on the first island on Pokemon Sun and Moon! It’s not at all easy and requires a lot of patience, but it is not impossible. If you want to catch one there is a detailed video before.Below you will find out the step by step guide.
Once you find one you use false swipe and wait for it to use the mechanic where it calls for help and another Pokemon comes to its aid. The chance of a Salamence showing up is very low as well so you’ll have to keep burning turns and defeating Bagon’s until it finally shows up!