North of Perth and south of Geraldton, the snorkeling at Jurien Bay Marine Park is known for colorful corals and sea lions. While you can snorkeling from offshore in the Jurien Bay Marine Park, some of the best snorkeling is boat-accessed out at the islands in the marine park.
One of the more popular features of the marine park is the Jurien Bay Underwater Interpretive Snorkel Trail. The snorkel trail starts 30m off the old jetty piles on the shore. At this shore-accessed dive site, the water depth varys from 2m to 6m deep. There are 70 reef balls along the old wooden jetty pilings out in the water spread over an area of 100 square meters. The best parking to access the Jurien Bay snorkel trail is from Dobbyn Park. The local dive shops have a waterproof swim card that outlines the underwater features along the trail.
In Jurien Bay Marine Park, the sanctuary and scientific reference zones are marked by yellow buoys that extend about one meter above water level. The markers are spaced one kilometrer apart and can be used as a guide to line up the zone boundary. The buoys are not designed to be used as moorings and it is an offense to do so.
Overall, Jurien Bay Marine Park is the 6th most popular snorkel dive spot of all 24 snorkeling dives in Western Australia.