St. Ninian's Isle is a unique site featuring the largest active sand tombolo in the United Kingdom. Snorkelers can explore two distinct coastlines, with the north side typically offering calmer conditions. The topography consists of shell-sand bottoms interspersed with rocky outcrops near the island end. Depths range from 1 to 5 metres, with an average of 3 metres. This site is suitable for intermediate snorkelers who are prepared for cold water conditions, which range from 8C to 13C throughout the year. Access is via the shore, and parking is available. Divers and snorkelers must be aware of potential hazards including surf, rip currents, and the risks associated with cold water.

Banna Minn is a tombolo beach in the Shetland Islands, offering a distinct snorkelling experience across its sandy and rocky seabed. The site is best suited for intermediate snorkellers due to the potential for surf and the requirement for thermal protection in water temperatures ranging from 8C to 13C. Visibility at this shore-entry site typically fluctuates between 10m and 25m. Divers and snorkellers should remain aware of the hazards posed by cold water, potential entanglement, and surf conditions. Parking and toilet facilities are available for visitors at this location.

Meal Beach is a white sand beach in the Shetland Islands, offering accessible shore entry for snorkellers. The site features rocky headlands on both sides, with the south-east rocks providing a habitat for kelp and small crustaceans. Water temperatures at this marine site range from 8C to 13C throughout the year. Given the conditions and accessibility, it is rated as a suitable location for beginners. Snorkellers should be prepared for cool water temperatures and plan their visits accordingly to match the seasonal variations in the Shetland Islands.

The Knab is a shore-accessible reef and kelp forest located on the edge of Lerwick. The site features rocky gullies and is situated below an old torpedo tube platform. Divers and snorkellers can expect depths ranging from 2 to 10 metres, with an average depth of 5 metres. The area is exposed to the currents of Bressay Sound, which can be moderate. Visibility typically ranges between 10 and 25 metres. Due to the potential for strong currents, surf, and entanglement in kelp, this site is best suited for intermediate-level divers. Facilities including parking and a cafe are available nearby.

North Ham is a reef site located in the Shetland Islands, characterised by a rocky seabed and red granite cliffs. Divers and snorkellers can explore this area at depths ranging from 2 to 8 metres, with an average depth of 4 metres. Entry is via the shore, and the site is suitable for intermediate divers. Conditions include mild currents and visibility between 10 and 25 metres. Water temperatures are chilly, ranging from 8 to 13C throughout the year, making a drysuit recommended. Hazards at this location include cold water, potential entanglement, and surf. Parking facilities are available nearby.