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.

The SMS Markgraf is a scuttled German First World War battleship lying on its side in Scapa Flow. This wreck site features depths ranging from 19 to 45 metres, with an average depth of 35 metres. Divers can explore the hull, gun turrets, and superstructure. Access is by boat only, and the site is suitable for advanced divers due to the overhead environment and potential for entanglement. Visibility typically ranges from 10 to 30 metres. Water temperatures remain cold throughout the year, between 8 and 13 degrees Celsius, necessitating appropriate thermal protection. Moderate currents are present, and planning dives around slack water is recommended.

The SMS Dresden is a scuttled German Imperial Navy cruiser located in Scapa Flow. The wreck lies at depths ranging from 25 to 38 metres, with an average depth of 32 metres. Divers can explore the exterior of the vessel, which features encrusting marine growth. Access is by boat only, situated 1000 metres from the shore. Conditions include moderate currents and visibility typically between 12 and 20 metres. Water temperatures range from 8 to 13 degrees Celsius, making a drysuit and thermal underlayer essential. Due to the depth and potential for entanglement, this site is suitable for intermediate divers. Air fills are available locally.

SMS König is a scuttled German battleship located in Scapa Flow. The wreck sits upright on the seabed, with the main deck at approximately 16 metres and the hull reaching 42 metres. This site is suited for advanced divers capable of navigating large steel structures. Access is by boat only, and dives typically last 30 minutes. Conditions include moderate currents and visibility ranging from 5 to 20 metres. Water temperatures are cold, between 8 and 13 degrees Celsius, making drysuit diving essential. Divers should be aware of hazards including boat traffic and entanglement risks. Slack water is the recommended window for diving, and coordination with a charter skipper is necessary.

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.

The SMS Karlsruhe is a German Imperial Navy light cruiser scuttled in 1919. Lying on her side, the wreck sits at depths between 12 and 27 metres, with an average depth of 25 metres. Divers access the site via boat, with dives typically lasting 40 minutes. Visibility ranges from 10 to 20 metres, allowing for views of the hull and superstructure. Due to moderate currents and cold water temperatures between 8 and 13 degrees Celsius, a drysuit is essential. The site presents hazards including entanglement risks, potential down currents, and nitrogen narcosis at depth. Divers must plan carefully around narrow tidal windows to ensure slack water.