Cedar Bay Shoreline is a freshwater site featuring gentle slopes and a sandy bottom. Snorkelers can explore shallow underwater weed beds that provide habitat for small fish. The site is suitable for beginners, with depths ranging from 1 to 5 metres and an average depth of 3 metres. Entry is via the shore, and conditions include mild currents and visibility between 2 and 6 metres. Water temperatures can be cold, particularly during spring and autumn, so a wetsuit is recommended for comfort. Be aware of boat traffic in the area. Facilities available at the site include parking, toilets, showers, and changing rooms.

Powder Horn Arm is an artificial reef site located within the Merritt Reservoir in the United States. This secluded area features a sandy bottom and generally calmer water conditions, though visibility can be limited due to its proximity to the inlet. Snorkellers can explore depths ranging from 2 to 7 metres. Access is available via both shore and boat entries. The site is suited for intermediate snorkellers, though visitors should remain aware of potential hazards including boat traffic, cold water, and entanglement risks. Facilities at the reservoir include parking, toilets, showers, equipment rental, and guided tours. Water temperatures fluctuate significantly throughout the year, ranging from freezing in winter to 29°C in summer.