NutriBase

Crustaceans, Crab vs Mollusks, Scallop: Nutrition Comparison

Compare calories, protein, fat, carbs, vitamins and minerals per 100 g. Values shaded green are generally the more favorable ones.

Fish & Seafood Crustaceans, Crab 83 kcal · 100 g VS Fish & Seafood Mollusks, Scallop 216 kcal · 100 g

Key differences

  • Mollusks, Scallop has more calories; Crustaceans, Crab is lower in calories.
  • Mollusks, Scallop has more protein per 100 g.
  • Mollusks, Scallop is notably higher in iron.
  • Crustaceans, Crab is notably higher in calcium.

Nutrient comparison (per 100 g)

Nutrient Crustaceans, Crab Mollusks, Scallop
Calories 83 kcal 216 kcal
Protein 17.9 g 18.1 g
Total Fat 0.7 g 10.9 g
Saturated Fat 0.2 g 2.7 g
Carbohydrate 0 g 10.1 g
Dietary Fiber 0 g —
Total Sugars 0 g —
Sodium 563 mg 464 mg
Potassium 259 mg 333 mg
Calcium 91 mg 42 mg
Iron 0.5 mg 0.8 mg
Magnesium 36 mg 59 mg
Vitamin C 3.3 mg 2.3 mg
Vitamin A 1 mcg 22 mcg
Vitamin D 0 mcg —
Cholesterol 97 mg 54 mg

Green highlighting marks the more favorable value where it applies (for example, more protein or less saturated fat). Neutral nutrients are not highlighted.

Data source: USDA FoodData Central. Values are per 100 g of edible portion and are reference figures — they vary by variety, preparation and brand. Last updated: 2026-04-30.

Crustaceans, Crab

  • Protein 91.5%
  • Fat 8.5%
  • Carbs 0%

Mollusks, Scallop

  • Protein 34.2%
  • Fat 46.6%
  • Carbs 19.2%

Frequently asked questions

Which has more calories, Crustaceans, Crab or Mollusks, Scallop?
Per 100 g: Crustaceans, Crab has 83 kcal, Mollusks, Scallop has 216 kcal.
Which has more protein, Crustaceans, Crab or Mollusks, Scallop?
Per 100 g: Crustaceans, Crab has 17.9 g of protein, Mollusks, Scallop has 18.1 g.

Compare with other foods

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Note. This information is provided for general reference only and is not medical advice or a diet prescription. If you have a medical condition or special dietary needs, consult a physician or a registered dietitian.