Cocks (males) contain more white meat than Hens (females) and are preferred by Chefs. To identify them, Cocks have larger claws and their tail flap is narrower and more pointed. Cocks range in size from 1- 2kg, with an approximate 35% yield, and more white meat than brown. Other Crabs to look out for include the Spider Crab, Snow Crab and Blue Crab, which all have similar tasting meat, and the Blue Swimming Crab, found around the Pacific Rim. Whole Blue Swimmers can be imported, but the main demand is for chilled packs of the succulent meat, which have a 6 month shelf life - superb for crab cakes, chowders, salads and pasta..