Bay of Firth features a lush Zostera marina seagrass meadow, providing a vital nursery habitat for various fish and delicate invertebrates. This site is accessible via a recreational slipway, making it suitable for beginner snorkellers. Water temperatures in this marine environment range from 8C to 13C throughout the year. Snorkellers can explore the shallow meadow, which supports a variety of temperate marine life typical of the region, including diverse fish and invertebrates that utilise the seagrass for shelter and feeding. The site offers a straightforward shore entry, providing a accessible opportunity to observe the local coastal ecosystem in the Orkney Islands.

Waulkmill Bay offers a shallow, sandy-bottomed snorkelling experience within the Scapa Flow Wrecks area. The site is suitable for beginners, with depths ranging from 1 to 5 metres and an average of 3 metres. Snorkellers can expect mild currents and visibility between 10 and 25 metres. The habitat consists of seagrass, which supports a variety of temperate marine life and invertebrates typical of the region. Access is via the shore, and the site features parking and toilets. Due to the water temperatures, which range from 7 to 13 degrees Celsius, appropriate thermal protection is necessary. Be aware of cold water and surf conditions when planning your visit.

Churchill Barrier No. 2 in the Orkney Islands features a cluster of WWII blockships, including the Lycia and the Emerald Wings, which serve as artificial reefs. These wrecks are shallow, with parts often visible above the surface, making the site suitable for beginners and highly rated for snorkelling. Divers can expect depths ranging from 1 to 12 metres, with an average of 7 metres. Access is via the shore, with parking available nearby. Conditions vary, with visibility typically between 10 and 30 metres. Hazards include cold water, surge, and potential for low visibility. A typical dive lasts 60 minutes.

Churchill Barrier 3 in the Orkney Islands offers a unique opportunity to snorkel over the remains of the SS Reginald and SS Empire Seaman. These wrecks lie in shallow water, allowing for clear observation of the structures from the surface. The site is accessed via the shore and is best suited for intermediate snorkelers due to the variable conditions of the North Sea. Water temperatures range from 7C in February to 13C in August and September. The site is highly rated for its historical interest and the structural complexity of the submerged vessels, which provide a distinct environment for exploration in the Orkney region.

Ayre of Myers is a sandy cove located on the island of Stronsay in the Orkney Islands. The site features a combination of rocky habitats and dense mosaics of seaweeds. Access is via the shore, and the location is rated for intermediate snorkellers. Water temperatures in this marine environment fluctuate between 8C and 13C throughout the year, with the warmest conditions occurring in August and September. Due to the nature of the terrain and variable conditions, this site is best suited for those with previous snorkelling experience.

Barrel of Butter is a combined natural and artificial reef located within the Scapa Flow Wrecks area. The site sits at depths between 10 and 20 metres, with an average depth of 15 metres. Divers should expect visibility ranging from 5 to 10 metres and water temperatures between 8 and 13 degrees Celsius, making a drysuit the practical choice. While currents at the site are generally mild, strong currents can develop in the surrounding Orcadian waters. Access is by boat, and divers must be aware of potential surf and sharp rocks in shallow areas. This site is suitable for intermediate divers who should plan their dives around slack water.

SMS Cöln is a German light cruiser scuttled in 1919, resting upright on the seabed in Scapa Flow. The wreck remains largely intact, offering divers the opportunity to explore recognisable deck features, gun emplacements, and the hull structure. Depths range from 20 to 36 metres, with an average of 30 metres. Access is by boat only. Conditions include mild currents and visibility between 5 and 20 metres. Due to water temperatures of 8 to 13C, drysuits are recommended year-round. Divers should be prepared for cold water and low visibility, and exercise caution when navigating internal wreck structures. Guided tours are available through local operators.

SMS Kronprinz Wilhelm is a German High Seas Fleet battleship resting upright in Scapa Flow. The wreck spans depths from 12 to 40 metres, with an average depth of 30 metres. Divers can explore the main structure, including massive gun turrets and intact hull plating. The site is accessible only by boat, located 1200 metres from shore. Conditions feature mild currents and visibility between 10 and 20 metres. Due to the cold water temperatures of 8 to 13 degrees Celsius and potential overhead environments, a drysuit and wreck certification are recommended. Divers should be aware of entanglement hazards and the deep nature of the site.