1 cup chopped red onions, one jalapeno pepper, chopped, 1/4 cup lime, juiced and zest, 1 1/2 pounds seedless watermelon, chopped, 1 bunch cilantro, chopped, 1 teaspoon sea salt.
Mix the red onion, jalapeno peppers, lime juice, and zest in a bowl, set aside for 10 minutes. In a separate bowl, add the watermelon, cilantro, lime juice, zest, and salt; allow to stand 15 more minutes. Next, add the red onion mixture. Stir together, taste. Cover the bowl with plastic wrap, and refrigerate for at least 20-minutes to allow the flavors to marry.