Fresh water license or salt water license is all you need. BUT, if you fish above the Hoquiam river bridge by Swansons or Above the Chehalis river bridge in Aberdeen you MUST have a fresh water license. Best to get a fresh water license if you have no plans to fish salt water until after next April. If you are not tight on money, get a combination and fish and crab anywhere in Grays Harbor with no worries. Elsewhere in the state you may need to buy enhancements to fish there, legally, like the Columbia for salmon and crabbing in the Puget Sound.

Sorry eyeFISH, didn't mean to step on your post.
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Taking my fishing poles with me to a body of water that has fish in it is not an excuse to enjoy the scenery.