If your looking for a good area to soak up what the PNW has to offer both above and below the water, this would be my list.
First Im guess'en your coming from the Seattle area so this is what I would do.
Head to Hood canal, there are a great many of shore dives that offer easy divng with a good chance of seeing wolf eels and octo's. There are plenty of camping areas and other above water attractions. There is plenty of dive shops along the way and if you are there in the right season you can get you limit with crabs if you desire.
From there you could head north up the pennisula to the Neah bay area, along the way you will see some of the greatest scenery, if the clouds part. Along the way you could dive Lake Crecent and soak up some 100' plus of vis, a neat spot to do some deep dives. You metioned that you were into wreck's, if you get a chance and a boat dive the Diamond Knot, one of the best shipwrecks we have to offer that is at a reasonable depth, 140 or so. That would be west of Port Angeles heading out to Neah bay.
The next shore diving areas that I would reccomend would be in a little town called Sekiu. There is a nice jetty and kelp forrest you can dive witch offers a great diverse dive that can keep you entertained all day. There is also tank fills, camping, lodging in town, about 50 people. There are also nice shore dives at salt creek and snow creek. If you can get a charter or a boat there is some awsome diving west of these sites around cape flattery.
once you head south again closer and into Oregon Ive found shore diving gets a little spoty. There are shore dives in Newport, Florence, and Winchester Bay but I would rather rent a quad and have fun on the sand dunes or pick up a fishing rod. Closer to California there is some great dives in Port Orford but they are all boat dives.
Good luck, if you want more site specific information id be happy to oblige, Im sure others would also have good info
Jumbo