NW 15th Street is a localized rocky shelf situated within the sandy coastline of Lincoln City. This site features submerged rocky outcrops that support kelp and various invertebrates. Snorkeling here is best suited for intermediate participants due to the presence of surf, sharp coral, and mild currents. Access is via the shore, and the site is best explored when the ocean is exceptionally flat. Facilities available at the location include parking, toilets, showers, and a rinse station. Typical sessions last approximately 60 minutes, though conditions vary significantly.

Gleneden Beach State Recreation Site is a sandy beach environment characterised by a heavy shorebreak. Snorkelling conditions are generally poor due to low visibility and a lack of rocky structure. The site is primarily used by beginners for practising gear handling in the shallows. Water temperatures are consistently cold, ranging between 10C and 14C throughout the year. Hazards include significant surf, rip currents, and cold water temperatures. Swimming is generally not recommended. Facilities at the site include parking and toilets.

Roads End in Lincoln City, United States, is a reef site defined by basalt rock formations and submerged lava islands. These structures create protected pockets within the marine environment. Divers and snorkellers should be prepared for cool water temperatures ranging from 10C to 13C throughout the year. The site is accessed from the shore, though it is located 1609 metres out. Conditions are variable, with visibility typically between 5 and 15 metres. Due to strong currents, rip currents, surge, and surf, this site is suited for intermediate divers. Hazards include an overhead environment and the presence of sharks. Facilities available include parking, toilets, showers, and equipment rental.

Fogarty Creek Cove is a shore-entry site near Depoe Bay where a freshwater creek meets the ocean. The topography consists of rocky reefs located at the north and south ends of the cove. These areas offer shallower water suitable for observing intertidal life. Water temperatures at this marine site range from 10C to 14C throughout the year. Due to the presence of surf and rip currents, this site requires caution. Facilities including parking and toilets are available for visitors. The site is suitable for beginners, though conditions vary, and it is rated 3/5 for snorkelling.

Salmon River Estuary at Knight Park offers a brackish water snorkeling experience near Lincoln City. The site features seagrass beds and submerged logs, providing a sheltered environment compared to the open Pacific coast. Entry is via the shore, and the site is suitable for beginners, though conditions vary with mild currents. Snorkellers should be aware of potential hazards including surf and rip currents. While no species are confirmed at this exact location, species recorded around this area include the Ochre Sea Star, California Sea Lion, Harbor Seal, and various nudibranchs such as the Monterey Dorid and Hermissenda. Facilities at the site include parking and toilets.

Pirate Cove is a narrow, secluded reef and kelp forest site located north of the main harbour in Depoe Bay. Divers access the site via shore entry, though the surrounding land is largely private. Conditions are generally mild, with water temperatures ranging from 10C to 14C throughout the year. Marine life commonly observed includes harbour seals and various snails. Divers may also encounter uncommon species such as Monterey dorids, Nanaimo dorids, sea stars, northern kelp crabs, shrimp, rock crabs, ochre sea stars, barnacle-eating dorids, and red sponge dorids. Due to potential rip currents and surf, this site is recommended for intermediate divers. Facilities at the location include parking and toilets.

North Point is a marine dive site near Gleneden Beach, United States, characterised by basalt shelves, vertical walls, and caves. The site features a kelp forest environment and is accessible via a shore entry. Due to the challenging conditions, including strong currents, surf, and cold water temperatures ranging from 10C to 14C, this site is suitable for advanced divers. Parking is available at the location. Snorkellers may also visit this site, which holds a 4/5 rating for the activity. Divers should be aware of potential entanglement hazards associated with the kelp forest environment.

Siletz Reef is a protected marine area located 2400 metres offshore from Neskowin. This site features deep rocky habitats and kelp forests, extending to depths of 50 metres. Access is by boat, and the site is suited for advanced divers due to challenging conditions including strong currents, surge, and surf. Visibility varies between 2 and 12 metres, and water temperatures remain consistently cold, ranging from 8 to 10 degrees Celsius throughout the year. Divers and snorkellers should be prepared for cold water and low visibility environments.