Porth Iago is a sheltered cove on the Llŷn Peninsula, Pembrokeshire, featuring a reef environment accessible from the shore. The site is well-suited for beginners, with an average depth of 3 metres and a maximum depth of 5 metres. Snorkellers can explore the rocky edges of the cove, which provide varied micro-habitats. Conditions are generally mild, though visitors should be aware of potential surf. Facilities available at the site include parking, toilets, showers, and a cafe. Water temperatures fluctuate between 9C and 16C throughout the year.

Porth Ysgaden is a sheltered horseshoe-shaped bay on the Llŷn Peninsula, Pembrokeshire, featuring rocky walls and shallow gullies. This shore-entry site is suitable for beginners, with depths ranging from 5 to 9 metres and an average depth of 5 metres. Divers can expect mild currents and visibility between 3 and 10 metres. The site is accessible via a slipway and offers parking facilities. Night diving is possible, with typical dives lasting around 50 minutes. Water temperatures fluctuate between 9C and 16C throughout the year. Divers and snorkellers should remain aware of boat traffic and potential entanglement hazards in the area.

Porthdinllaen is a sheltered bay in Pembrokeshire, United Kingdom, defined by its extensive seagrass meadows and reef topography. This site is suitable for beginners, offering shallow dives with an average depth of 3 metres and a maximum of 5 metres. Shore entry is standard, with mild currents and visibility ranging from 3 to 10 metres. The habitat supports a variety of temperate marine life, including various reef fish and invertebrates. Divers should be aware of potential hazards such as boat traffic, jellyfish, sea urchins, and surf. Facilities including toilets and a cafe are available nearby. The site is also suitable for snorkelling and night diving.

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.

Segontuim is a wreck dive located in Pembrokeshire, United Kingdom, resting at depths between 20 and 31 metres with an average depth of 27 metres. This site is suited for intermediate divers due to the moderate currents and entanglement hazards present on the structure. Visibility is typically limited to 5 metres, requiring careful navigation and the use of torches. Water temperatures range from 9C to 16C, necessitating appropriate thermal protection. Access is by boat only, situated 14 kilometres from the shore. The wreck provides a habitat for various temperate marine life, including reef fish and invertebrates common to the region. Guided tours and air fills are available locally.

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.

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.

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.