Tye's Tunnel in the St Abbs Marine Reserve offers a diverse underwater environment featuring a combination of cavern, natural reef, and artificial reef structures. Suitable for intermediate divers, the site ranges in depth from 5 to 15 metres with an average of 10 metres. Visibility typically spans 5 to 15 metres. The cavern section presents an overhead environment that requires precise buoyancy control and awareness. Access is strictly by boat, and divers should be prepared for mild currents and potential surf. Given the water temperatures of 7 to 14 degrees Celsius, a drysuit is recommended for this 40-minute dive experience.

St Abbs Marine Reserve offers a diverse shore dive featuring rocky outcrops, walls, caves, and wrecks. Located 50 metres from the shore, the site reaches depths between 3 and 18 metres, with an average of 10 metres. Divers can explore the area near the pier and the back of the harbour wall. Conditions include moderate currents and visibility ranging from 6 to 20 metres. Water temperatures are cold, typically between 7C and 14C, necessitating the use of drysuits. Hazards to consider include boat traffic, surge, surf, entanglement, and overhead environments. The site is suitable for beginners and supports night diving, with typical dive times around 60 minutes.

Gull Rock is a shore-entry reef site located within the St Abbs Marine Reserve. The site is suitable for beginners, offering a shallow dive with an average depth of 7 metres and a recorded depth range between 6 and 7 metres. Divers should be prepared for cold water temperatures, which fluctuate between 7C and 15C throughout the year, and potential surf conditions at the entry point. Facilities available at the location include parking and toilets. As a marine environment, the site provides a typical temperate reef topography for exploration.

Big Green Carr is a sheltered reef located 50 metres from the shore within the St Abbs Marine Reserve. The site offers a manageable dive for beginners, with depths ranging from 10 to 15 metres and an average of 12 metres. Divers can expect mild currents and visibility between 5 and 15 metres. Entry can be made from the shore or by boat, though shore entries require caution due to surf and surge. Water temperatures fluctuate between 7 and 14 degrees Celsius throughout the year, making a drysuit the recommended equipment. Facilities including parking, air fills, and guided tours are available on site.

Cathedral Rock is a diverse marine site within the St Abbs Marine Reserve, featuring a combination of reef, wall, and cave topography alongside kelp forests. Located 50 metres from the shore, the site offers depths ranging from 6 to 17 metres with an average of 10 metres. It is suitable for beginners and accessible via both shore and boat entries. Divers should be prepared for mild currents and visibility between 5 and 10 metres. Hazards include cold water, surge, surf, boat traffic, and the overhead environment of the cave. Water temperatures fluctuate between 7C and 14C throughout the year. Facilities available nearby include parking, air fills, and boat charters.

Starney Bay is a sheltered site within the St Abbs Marine Reserve, characterised by rocky reefs, walls, and dense kelp forests. The site is suitable for beginners, offering depths between 3 and 15 metres with an average of 8 metres. Entry is via the shore, and divers should be prepared for potential hazards including surge, surf, entanglement, sea urchins, jellyfish, and variable visibility ranging from 5 to 20 metres. Currents are generally mild. Facilities at the site include parking, toilets, a cafe, and a dive shop. A typical dive lasts approximately 50 minutes.

West Hurker is a reef dive site located within the St Abbs Marine Reserve in the United Kingdom. This site is accessible by boat and is suitable for beginner divers. The topography consists of a reef environment with depths ranging from 0 to 15 metres, averaging 9 metres. Divers should be aware of moderate currents and potential surge conditions in the area. Visibility is typically around 10 metres. Water temperatures fluctuate throughout the year, ranging from 7C in late winter to 14C in late summer. Air fills are available for those planning a dive at this location.

Coldingham Bay is a sheltered sandy bay located within the St Abbs Marine Reserve. The site features rocky fringes along its northern and southern edges, which provide the primary areas for exploration. Snorkellers can expect depths ranging from 1 to 10 metres, with an average depth of 5 metres. Access is via the shore, making it suitable for beginners. Conditions include mild currents, though visitors should be aware of potential hazards such as surf, rip currents, and cold water temperatures. Water temperatures remain consistently low, ranging from 7C to 15C throughout the year, necessitating the use of a wetsuit for comfort.