To start, cube the watermelon or you can buy watermelon already cubed. Make sure you remove the rind.
Next, split a cucumber the long way and use a spoon to scoop out the seeds. Then slice the cucumber into smaller pieces.
Then, roughly chop mint leaves.
In a large bowl, add cubed watermelon, cucumber, mint and mix them together.
To the side, in a small bowl mix a juiced lemon and agave syrup together for a light dressing.
Pour the dressing into the bowl with the other ingredients and mix well.
Lastly, garnish with feta cheese before serving. By taste, you may want to add more feta if you really enjoy the flavor.