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.

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.

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.

Otter Rock Marine Reserve is a protected area in the United States featuring shallow rocky reefs and extensive kelp forests. Sheltered by Cape Foulweather, the site offers a relatively stable environment for divers and snorkellers. Depths range from 2 to 18 metres, with an average of 8 metres. Shore access is available, though conditions include cold water, surge, surf, and potential rip currents. Visibility fluctuates between 2 and 12 metres. Due to the consistently cool water temperatures of 9 to 11 degrees Celsius, a wetsuit is required. The site is suitable for beginners, with typical dives lasting around 45 minutes. Facilities include parking and toilets.

Siletz Bay in the United States offers a shallow estuarine environment for snorkelers. The site features a sandy bottom and the submerged base of the Four Brothers rock formations, best explored during high slack tide. Snorkelers can observe various marine life, including very common harbor seals and crabs, such as rock crabs and European green crabs. Other species recorded here include snails, herring, ochre sea stars, and the occasional sea nettle. Entry is via the shore near the Taft waterfront. Conditions are generally mild, though snorkelers should be aware of cold water temperatures, surf, and potential rip currents. Parking is available for visitors.

Starfish Cove is a rocky shoreline located north of Yaquina Head in the United States. This site is suitable for intermediate snorkelers, offering shallow-water exploration at depths ranging from 1 to 3 metres, with an average depth of 2 metres. Access is via the shore, and the site features mild currents. Snorkelers should be prepared for cold water temperatures, which typically range between 10°C and 13°C throughout the year. The area is subject to surf conditions, and parking is available for visitors. A typical session at this site lasts approximately 45 minutes.

Cobble Beach, situated at the base of the Yaquina Head Lighthouse, is a reef site defined by its distinctive round basalt cobblestones and tide pools. Access is via a shore entry. Conditions at this location vary, and the site is best suited for intermediate snorkelers due to the presence of surf and sharp coral. Water temperatures are cool, ranging from 10C to 14C throughout the year. Snorkelers should exercise caution regarding surge, as the site is most accessible during calm days when wave action is minimal. Facilities available at the site include parking, toilets, showers, and a rinse station.

Quarry Cove at Yaquina Head is an artificial intertidal area formed within a former rock quarry. This site offers shore access for both divers and snorkellers, though conditions are variable with potential surf and surge. Water temperatures remain cool, ranging from 10C to 14C throughout the year. Divers and snorkellers should be prepared for low visibility and the presence of sea urchins. Facilities at the location include parking and toilets, and guided tours are available. Please note that the site is frequently closed to public entry during harbour seal pupping seasons to protect the local wildlife.