1560s, to remove (a nut, etc.) from a shell, from shell (n.). The meaning to bombard with shells is first attested 1856. To shell out disburse (1801) is a figurative use from the image of extracting nuts. Related: Shelled; shelling.
There are 14 calories in 1 cup, slices (3 oz) of Nopales (Cactus Leaf), raw. You'd need to walk 4 minutes to burn 14 calories. Visit CalorieKing to see calorie count and nutrient data for all portion sizes.
Cantaloupe 1 cup cubes (160g) Sugars, total: 13g Calories, total: 54 Calories from sugar: 52 1 serving (134g - 49% waste) Sugars, total: 11g Calories, total: 46 Calories from sugar: 44. That's about the same as a glass of OJ.