1- Sekiu jettty. Best shore dive in the North West, Loads of fish, good visibility, good chance of swimming with marine mammals, multiple octos, plenty of harvesting potential, easy and convenient lodging. Only possible downside is that its pretty shallow, max depth is about 40 feet.
2.5 hours from Seattle, head towards Neah Bay on hwy 101
2- Deception Pass. great drift dive, huge life, unique topography, chance of finding cool stuff under the bridge. Max depth about 130 fsw. If you go, pay attention to the tide and if you can go with someone who has been there before.
1.5 hours from Seattle, West on Hwy 20, follow big signs, when you drive over a huge bridge the next state park on your right is your destination, ask a park ranger if you can drive down close to the water. If you going there in winter time call ahead so they can unlock a gate.
3-Mukiliteo. good place to get deep in a hurry, great training site, usually a good number of fish, crab, shrimp, great night dive.
.25 hours from Seattle, whidby Island ferry exit,
4- drive north to Vancouver and vicinity. Purteou cove, woodlands, horseshoe bay, customs dock,
2.5 hours from Seattle