NutriBase

Crustaceans, Crab vs Mollusks, Whelk: 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, Whelk 275 kcal · 100 g

Key differences

  • Mollusks, Whelk has more calories; Crustaceans, Crab is lower in calories.
  • Mollusks, Whelk has more protein per 100 g.
  • Mollusks, Whelk is notably higher in iron.
  • Mollusks, Whelk is notably higher in potassium.
  • Mollusks, Whelk is notably higher in vitamin c.

Nutrient comparison (per 100 g)

Nutrient Crustaceans, Crab Mollusks, Whelk
Calories 83 kcal 275 kcal
Protein 17.9 g 47.7 g
Total Fat 0.7 g 0.8 g
Saturated Fat 0.2 g 0.1 g
Carbohydrate 0 g 15.5 g
Dietary Fiber 0 g 0 g
Total Sugars 0 g —
Sodium 563 mg 412 mg
Potassium 259 mg 694 mg
Calcium 91 mg 113 mg
Iron 0.5 mg 10.1 mg
Magnesium 36 mg 172 mg
Vitamin C 3.3 mg 6.8 mg
Vitamin A 1 mcg 49 mcg
Vitamin D 0 mcg —
Cholesterol 97 mg 130 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, Whelk

  • Protein 73.4%
  • Fat 2.8%
  • Carbs 23.9%

Frequently asked questions

Which has more calories, Crustaceans, Crab or Mollusks, Whelk?
Per 100 g: Crustaceans, Crab has 83 kcal, Mollusks, Whelk has 275 kcal.
Which has more protein, Crustaceans, Crab or Mollusks, Whelk?
Per 100 g: Crustaceans, Crab has 17.9 g of protein, Mollusks, Whelk has 47.7 g.

Compare with other foods

Crustaceans, Crab vs Alaska Pollock, Raw Crustaceans, Crab vs Anchovies, Canned In Olive Oil Crustaceans, Crab vs Cod, Pacific Or Alaskan Crustaceans, Crab vs Crustaceans, Crab Pick a pair manually →

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.