Painted Rock Beach is a shore-entry site featuring small rocky clusters that can be explored with a mask during flat ocean conditions. The site is shallow, with depths ranging from 1 to 5 metres and an average of 3 metres. Snorkellers may encounter common species such as sea nettles, ochre sea stars, rock crabs, and various snails. Less frequently, skates, Pacific lion's mane jellyfish, common moon jellyfish, opalescent inshore squid, and righteye flounder are recorded. Due to the cold water temperatures and potential for surf, surge, and rip currents, this site is best suited for beginners under calm conditions. Facilities include parking and toilets.

The Cove is a rocky reef site located three miles south of Gearhart. The topography consists of basalt boulders and tide pools, offering a shore entry for snorkelers. Depths range from 2 to 15 metres, with an average of 8 metres. Conditions are variable, with visibility typically between 5 and 15 metres depending on swell. Due to the presence of surf and surge, this site is suited for advanced snorkelers. Water temperatures fluctuate between 8C and 15C throughout the year. Facilities at the site include parking, toilets, and showers. Typical snorkel sessions last approximately 30 minutes.

Cullaby Lake, located south of Warrenton, is a freshwater site suitable for beginner snorkellers. The lake features a designated swimming area, with the most productive areas for observation found near the docks and lily pads. Depths range from the surface to 9 metres, with an average of 4 metres. Conditions are generally mild, though water temperatures fluctuate significantly, ranging from 7°C in April to 20.5°C in July. Shore access is available, supported by facilities including parking, toilets, showers, and a rinse station. Snorkellers should remain aware of potential hazards, including boat traffic, cold water, and entanglement in aquatic vegetation.

Indian Beach in Ecola State Park offers a rocky reef and kelp forest environment suitable for intermediate snorkellers. The site features a rocky area at the south end known as the Garden, which provides a sheltered zone for observation. Depths range from 0 to 10 metres, with shore access available. Water temperatures fluctuate between 9 and 15C, necessitating a wetsuit. Divers and snorkellers may encounter Ochre Sea Stars, snails, rock crabs, and striped shore crabs. Less frequent sightings include Monterey Dorids, Northern Leopard Dorids, and various jellyfish species. Be aware of hazards including surf, surge, rip currents, low visibility, and entanglement in kelp.

Youngs River Falls is a freshwater site located south of Astoria, featuring a deep pool at the base of a 54-foot waterfall. Snorkellers can explore the rocky bottom of the pool, which offers visibility ranging from 1 to 5 metres. The site is accessed from the shore, with a typical session lasting around 120 minutes. Conditions are variable, with water temperatures ranging from 8C to 15C and moderate currents present. Due to the cold water temperatures and potential for currents, this site is best suited for prepared beginners. Parking is available for visitors at the site.

Submarine Rock, located within Ecola State Park, is a shore-entry site featuring a large offshore monolith. This structure creates a semi-sheltered lee side, providing a base for a rocky reef and dense kelp forest. Divers should be prepared for water temperatures ranging from 9C to 15C throughout the year. The site is suited for intermediate divers due to potential hazards including surf, rip currents, and entanglement risks. Facilities at the location include parking, toilets, showers, changing rooms, and a rinse station. Guided tours and a dive shop are available to support visitors exploring this cold-water environment.

Bird Rocks, located at the northernmost point of Cannon Beach, is a reef site suited for advanced divers due to challenging conditions. The site is accessed from the shore and is subject to strong currents, surge, and surf. Visibility typically ranges from 5 to 15 metres, and water temperatures fluctuate between 9C and 15C throughout the year. Given the exposed nature of the point, snorkeling is only feasible during extreme low tides or exceptionally calm sea states. Divers should be prepared for cold water and potential rip currents. Parking is available near the site.

Haystack Rock is a prominent basalt formation featuring submerged ledges and tide pools. Snorkelling is best conducted during high slack tide along the western face of the rock. The site reaches depths of up to 45 metres, though conditions are variable. Water temperatures range from 9C to 14C, and the environment is characterised by strong currents, surf, and rip currents. Due to the cold water and challenging conditions, this site is suited for intermediate snorkellers. Shore access is available, with parking and toilets provided near the site. Guided tours are also available for those navigating the area.