Peel and clean the shrimp and rinse with cold water. Cut shrimp in half widthwise and place on a plate. Peel the mango and cube. Thinly slice onion. Juice the limes. Puree half of the mango with the chili and approx. 3/4 of the lime juice. Pour the mango puree over the shrimp and let chill in the refrigerator for approx. 45 min.
Arrange the shrimp in a bowl or deep plate. Garnish with the remaining mango and the onions. Finally, season with a little flaky salt, serve, and enjoy!