Section 5 AAC 32.055 - Size limits for Dungeness crab(a) Unless otherwise provided in this chapter, only male Dungeness crab six and one-half inches or greater in shoulder width may be taken or possessed.(b) Shoulder width measurement of Dungeness crab shall be the straight-line distance across the carapace immediately anterior to the tenth anterolateral spine and shall not include the spines.In effect before 1981; am 6/28/81, Register 78; am 7/1/2006, Register 178