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.

The SS Rondo is a challenging wreck dive located in the Sound of Mull, United Kingdom. The vessel lies at depths ranging from 4 to 50 metres, with an average depth of 30 metres. Due to the significant depth and strong currents, this site is strictly for advanced divers. Boat access is required, and dives must be timed precisely with slack water windows. Visibility varies between 10 and 30 metres. Given the water temperatures of 8 to 14 degrees Celsius, a drysuit is essential. Divers should be prepared for decompression requirements and potential entanglement risks within the wreck structure. Always carry a delayed surface marker buoy for ascent.

Fingal's Cave is a geological site defined by its hexagonal basalt columns that extend from the cliff face into the water. Snorkellers can explore the cave mouth, which features a kelp-covered floor. This site is suitable for intermediate snorkellers, though access requires a boat. Conditions are challenging, with strong currents and surf present at the entrance. The water temperature is cold, ranging from 8C to 15C throughout the year. Due to the overhead environment and boat traffic, visitors must exercise caution when navigating the cave entrance. The site offers a unique perspective of the basalt formations both above and below the surface.

Lochaline Pier provides access to a diverse underwater environment featuring vertical walls, reefs, kelp forests, and wrecks within the Sound of Mull. The site is characterised by a dramatic drop-off, with depths ranging from 1 to 90 metres. Due to strong currents, boat traffic, and cold water temperatures between 8C and 14C, this site is suited for advanced divers. Snorkellers can explore the shallower sections near the old pier. Divers should be aware of hazards including low visibility, entanglement risks, and down currents. Facilities at the site include parking, air fills, a dive shop, boat charters, guided tours, a cafe, and gear storage.

Lochaline provides diverse underwater topography including wrecks, walls, and reefs accessible via a single shore entry. The site spans a significant depth range from 1 to 90 metres, with an average depth of 20 metres. Visibility typically fluctuates between 3 and 15 metres. Divers should be prepared for moderate currents, which can strengthen, alongside potential down currents and boat traffic. Due to water temperatures ranging from 8 to 14 degrees Celsius, a drysuit is recommended. An on-site dive shop provides air fills and guided tours, which are advised for managing the site's specific current patterns and depth profiles.

The Thesis Wreck is a notable shipwreck located in the Sound of Mull, resting at depths between 20 and 32 metres with an average depth of 26 metres. This site is suited for intermediate divers due to the strong currents and the requirement for precise slack water timing. The wreck structure offers penetration and swim-through opportunities, though divers must remain cautious of entanglement hazards. Visibility typically ranges from 5 to 10 metres. Water temperatures vary from 8 to 14 degrees Celsius, making a drysuit essential. Access is by boat only, and divers should carry a surface marker buoy and a cutting tool. Active boat traffic is common in the area.