You need a license to go clamming on the coast.
For razor clams, the limit is 15. They can be taken by hand or hand-powered tools.
“Razor clams may be taken by hand, shovel, or cylindrical gun or tube,” . “The opening of the gun/tube must be either circular or elliptical with the circular gun/tube opening having a minimum outside diameter of 4 inches and the elliptical gun/tube opening having a minimum outside diameter dimension of 4 inches long and 3 inches wide.” It is unlawful to remove clams from the shell before leaving the harvest area.
A popular area to dig for clams is right here in Agate Beach.