The wrecks of Shilshole are a great dive. This is a little current sensitive but can be done on scooters just about any day. To see all the wrecks a scooter and compass are a big help.
Omar: 47 Degrees 40'23.5907"N, 122 Degrees 25'23.1141"W
Dauntless: 47 Degrees 40'22.4355"N, 122 Degrees 25'22.7184"W
Tilted Barge: 47 Degrees 40'22.9399"N, 122 Degrees 25'18.9008"W
Deep Barge: 47 Degrees 40'26.3927"N, 122 Degrees 25'22.2711"W