A snow crab may be any of several species of crab with snow white flesh. Seafood restaurants typically boil the legs and serve them with condiments such as butter and lemon juice. Snow crab legs are high in protein and sodium.
Calories
A 1 lb. serving of snow crab legs with no added ingredients contains a total of 160 calories, according to the website Fatsecret. This represents 8 percent of the daily recommended value for calories based on a standard daily diet of 2,000 calories. Protein contributes 151 calories and fat accounts for the remaining 9 calories.
Protein, Fat and Carbohydrates
Snow crab legs contain 38 g of protein per 1 lb. serving, which is 76 percent of the daily value for protein. They also contribute 2 percent of the daily recommended value for fat, and contain no saturated fat or carbohydrates.
Vitamins and Minerals
Snow crab legs contain 1,900 mg of sodium per 1-lb. serving, which is 79 percent of the daily recommended value for sodium. However, they contain no vitamin A or vitamin C.



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