The underwater park at Keystone Jetty is found just South of the Keystone Ferry terminal in the Fort Casey State Park.  A small parking area with picnic tables and facilities makes for a nice two-tank location.

About 30 miles North of Seattle on Whidbey Island.  The location makes for a great loop drive for a leisurely day.  The North access to the island is via Anacortes, and the South access is via the Mukilteo Ferry, just West of Everett.  About in the middle of the Island, just South of Coupeville, head West on Wanamaker road (highway 20) to the Keystone Ferry landing.

Keystone Jetty (Fort Casey)

I dive this site when minimal tide exchanges are present. We did the jetty for the first dive and did a drift from the pilings to the jetty for the second dive. There is a line along the bottom which runs from the upper northeast piling to the jetty. Follow this and do not go any deeper or you will overshoot your location of the jetty and end up in the ferry lane. We found 3 octos on the jetty last weekend.

Jennifer from Ferndale's Dive Log

@jennifer_from_ferndale

1 dives