Crab size: 210-300g. Overview. With their sweet, nutty flavour, and evenly textured, moist, firm flesh, blue swimmer crabs make superb eating. The firm texture and delicate flavour of the blue swimmer crab make it excellent for serving with pasta. While blue crab meat is low in calories and high in protein, it is higher in cholesterol. You should watch your intake of foods high in cholesterol when you eat blue crab meat, as it contains one-third of the cholesterol that is recommended in a day.