Sun Beach in Pembrokeshire offers a shallow reef environment suitable for beginners. Divers and snorkellers access the site via a slipway, leading to a rocky seabed. Depths range from 1 to 10 metres, with an average of 5 metres. Conditions are variable, with visibility typically between 3 and 10 metres and mild currents. Water temperatures fluctuate between 8C and 18C throughout the year, necessitating appropriate thermal protection such as full wetsuits, hoods, and gloves. The site is well-supported by local facilities, including parking, toilets, showers, and equipment rental. Divers should remain aware of jellyfish in the water.

Sun Beach in Pembrokeshire is a shore-entry reef dive suitable for beginner divers. The reef topography extends between 10 and 20 metres, with an average depth of 10 metres. Divers can expect mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 8C and 18C throughout the year, necessitating a drysuit or a 7mm wetsuit for comfort. As on-site amenities are unconfirmed, visitors should plan to bring their own water and changing arrangements. Remain alert for boat traffic in the vicinity at all times.

Tywyn is a shore-entry reef dive located in Mid Wales. The site features a reef structure suitable for beginners, with depths ranging from 7 to 14 metres. Divers can expect visibility between 5 and 10 metres and mild currents. Water temperatures fluctuate between 8 and 18 degrees Celsius, necessitating a well-fitted wetsuit or drysuit. Entry requires caution due to a potential shore break, so timing your approach between sets is recommended. Once underwater, be mindful of entanglement hazards and maintain close proximity to your group. Parking and toilets are available on-site, providing convenient access for a day trip.

Borth Submerged Forest in Pembrokeshire offers a unique snorkelling experience featuring a 4,500-year-old petrified forest. Visible at low tide, the site consists of peat reefs and gullies that provide an atmospheric underwater environment. Access is via the shore, and the site is best suited for intermediate snorkellers due to varying coastal conditions. Water temperatures fluctuate between 8C and 18C throughout the year. While no species are confirmed at this exact location, species recorded around this area include barrel jellyfish, rock crabs, sea stars, spiny spider crabs, European green crabs, shanny, and rockpool prawns.

Criccieth Castle is a shallow shore dive featuring reef structures that provide a navigation challenge for divers. The site typically ranges from 5 to 8 metres in depth, though it extends to 30 metres in some areas. Conditions are characterised by mild currents and variable visibility, which can occasionally be very low. Divers should be prepared for water temperatures between 8C and 18C. Due to the risk of boat traffic, the use of a surface marker buoy is essential throughout the dive. Parking is available at the site, facilitating a straightforward shore entry for those looking to build experience in temperate marine environments.

Bath Rocks, situated just south of the Royal Pier in Aberystwyth, provides a shore-accessible snorkeling site within the town. The topography consists of rocky platforms featuring deep gullies and vertical rock faces. These surfaces are covered in seaweed, creating a distinct underwater environment. Water temperatures at this site vary throughout the year, ranging from 8C in the winter months to 18C in August. Due to the nature of the terrain and the sheltered conditions, this site is suitable for beginners. Snorkelers should be prepared for variable conditions typical of the Pembrokeshire coastline.

Dorothea Quarry is a flooded slate quarry in Mid Wales, recognised as one of the deepest accessible freshwater dive sites in the United Kingdom. The site features steep quarry walls, submerged machinery, and industrial debris, creating a complex overhead environment. Depths range from 3 to 104 metres, with an average of 40 metres. Visibility is typically between 10 and 30 metres. Due to the significant thermocline, water temperatures drop from 16°C in the shallows to 4°C at depth. This site is suitable only for advanced, deep, or technical divers. Shore entry is required, and a drysuit with an appropriate undersuit is strongly recommended due to the cold water conditions.

Trefor Pier is an artificial reef site located in Pembrokeshire, United Kingdom. Divers can explore the structure at depths ranging from 2 to 8 metres, with an average depth of 6 metres. This shore entry site is suitable for beginners and offers mild currents. Visibility typically ranges between 5 and 10 metres. The site is accessible for night diving, with a typical dive duration of 60 minutes. Facilities available at the location include parking, toilets, air fills, and a cafe. Divers should remain aware of potential hazards, including boat traffic, entanglement risks, and surf conditions. Water temperatures fluctuate between 8C and 17C throughout the year.