Prince's Cairn in Loch Nan Uamh is a historic coastal site featuring rocky reefs and dense kelp forests. This advanced snorkel location requires careful planning due to moderate currents and potential surf conditions. Water temperatures fluctuate between 8C and 14C throughout the year, necessitating a dry suit with a warm undersuit for most months, though a thick semi-dry suit may suffice from late spring to early autumn. Access is via the shore, with parking facilities available nearby. Given the challenging conditions and environmental factors, this site is best suited for experienced snorkellers comfortable with variable marine conditions.

Cnap An T Siar is a marine dive site located in the United Kingdom. The site features a consistent depth of 12 metres. Dive records for this location date back to 2015. Due to the limited data available regarding the underwater topography and environmental conditions, divers should approach this site with appropriate caution and local knowledge. It is suitable for those comfortable with the specific depth profile provided. As there is no information regarding marine life or specific hazards, divers are advised to conduct thorough pre-dive planning and assess current conditions upon arrival.

Loch Sunart Wall is a wall and reef site located within the Sound of Mull Wrecks area. The topography features a wall structure suitable for intermediate divers, with depths ranging from 15 to 50 metres and an average depth of 20 metres. Conditions are variable, with strong currents and visibility typically between 5 and 10 metres. Divers may experience a gin and tonic effect in the surface layer. Access is available via both shore and boat entry. Hazards include entanglement, low visibility, strong currents, and surf. Facilities at the site include air fills, guided tours, parking, and boat charter services.

Calve Island Cove is a diverse dive site within the Sound of Mull, featuring a combination of reef, wall, and kelp forest topography. This site requires boat access and is suited for intermediate divers due to moderate currents and depths ranging from 10 to 44 metres, with an average depth of 20 metres. Visibility is typically around 15 metres. The underwater environment supports a variety of temperate marine life and invertebrates typical of the region. Divers should be prepared for deep water, potential low visibility, and strong currents. Air fills and guided tours are available for those visiting this location.

The Hispania is a shipwreck located in the Sound of Mull, resting at a depth of approximately 15 metres. This site offers a dive experience focused on the remains of the vessel. Conditions in the Sound of Mull vary, and divers should be prepared for water temperatures ranging from 8C to 14C throughout the year. Due to the nature of wreck diving and the specific depth, this site is generally suited for divers with appropriate training and experience in wreck environments. Access to the site is typically by boat.

The Shuna Wreck is a notable wreck site located in the Sound of Mull, resting at depths between 16 and 32 metres with an average depth of 18 metres. This site is suitable for intermediate divers with wreck certification. Access is strictly by boat, and divers should be prepared for surge and swell conditions during entry. Visibility typically ranges from 10 to 30 metres, though divers must remain cautious of sharp edges and entanglement risks throughout the structure. Due to local boat traffic, the use of a surface marker buoy is essential. The site experiences mild currents, though water movement can change during the dive.

Toscaig Pier is a shore-entry reef site located on the Applecross peninsula. The topography features rocky nooks and crannies that provide habitat for small marine life. Divers and snorkellers can explore depths ranging from 0 to 30 metres, with an average depth of 8 metres. Conditions are variable, with visibility typically between 1 and 15 metres and mild currents. The water temperature remains cold throughout the year, ranging from 8C to 13C, necessitating appropriate thermal protection. The site is suitable for beginners, though users should remain aware of boat traffic and potential entanglement hazards in the area. Parking facilities are available near the pier.

Picnic Site is a roadside location in the Sound of Mull offering accessible shore entry for snorkellers. The site features a pebble beach that leads into a gentle slope. Underwater, the topography consists of a muddy bottom where large colonies of brittlestars are found. Due to the gradual nature of the slope and the ease of access from the shore, this site is suitable for beginners. Conditions at this location can vary, so visitors should assess the water before entering. It provides a straightforward snorkelling experience for those exploring the coastal waters of the West Highlands.