Roskilly is a shore-entry reef dive located in Cornwall, United Kingdom, suitable for beginner divers. The site features a reef structure with depths ranging from 7 to 11 metres, averaging 9 metres. Divers should expect moderate currents and visibility consistently around 5 metres, making a torch useful for examining crevices. Water temperatures fluctuate between 10C and 17C throughout the year, requiring appropriate thermal protection. Hazards include sharp rocks and sea urchins during entry, as well as potential boat traffic. Divers should remain visible to surface support at all times and contact a local club to confirm current entry conditions before visiting.

Prussia Cove, also known as Bessy's Cove, is a historic site in Cornwall featuring a series of rocky gullies and reef structures. This shore-entry location is suitable for beginners, offering depths ranging from 2 to 14 metres with an average of 8 metres. Conditions vary, with visibility typically between 5 and 15 metres and mild currents. Water temperatures fluctuate throughout the year, ranging from 10C in late winter to 17C in late summer. The site provides a sheltered environment for snorkelling, allowing visitors to explore the varied topography of the rocky reef and artificial reef features found within the cove.

Mullion Island, located off the Lizard Peninsula, features a reef and kelp forest environment. Divers can access the site by boat or from the shore, with depths ranging from 10 to 19 metres and an average of 15 metres. Visibility varies between 5 and 20 metres. The site is suitable for beginners, though conditions require careful planning due to moderate currents and potential surge or swell. A thermocline may be present near the harbour. Divers should use a surface marker buoy and remain vigilant for boat traffic. Shore entries require caution due to surf and sea urchins, making protective footwear essential.

Mullion Cove is a working harbour on the Lizard Peninsula featuring a rocky reef located just outside the harbour walls. The site consists of kelp-covered boulders and gullies surrounding a small island, offering a varied topography for both divers and snorkellers. Depths range from 8 to 20 metres, with visibility fluctuating between 5 and 20 metres. Due to the potential for strong currents, surge, surf, and boat traffic, this site is best suited for intermediate-level divers. Water temperatures vary seasonally from 10C to 17C. Shore access is available, and the area provides facilities including parking, a cafe, toilets, and guided tours.

Melody Farm Quarry is a shore-entry freshwater dive site located in Cornwall, United Kingdom. Designed as a controlled inland environment, the quarry features an artificial reef that provides structured underwater scenery for divers to explore. The site is suitable for beginner divers, though it requires an Open Water certification. Divers should be aware of potential hazards, including entanglement risks and overhead environments. Conditions such as visibility and currents are variable, so it is essential to check local reports before entering the water. Contact the site management directly to confirm current access arrangements and available facilities before planning your visit.

The Helford River in Cornwall offers a diverse underwater environment featuring a mix of natural reef, seagrass beds, and artificial reef structures. Divers can explore this varied terrain at depths ranging from 6 to 12 metres, with an average depth of 9 metres. The site requires boat access and is suitable for beginners, though the moderate current necessitates careful planning around slack water. Visibility typically ranges between 5 and 10 metres. Water temperatures fluctuate between 10C and 17C throughout the year, requiring appropriate thermal protection. Due to heavy seasonal boat traffic, divers must use a surface marker buoy at all times.

Maenporth Beach is a sheltered reef dive in Cornwall, well suited to newly qualified divers and those building confidence in open water. The site features depths ranging from 3 to 5 metres with no significant current to manage. Visibility typically falls between 5 to 10 metres, allowing for a clear view of the temperate reef habitat and invertebrates along the seabed. Shore and boat entry options are both available. Water temperatures range from 10 to 17 degrees Celsius throughout the year, making a drysuit or thick wetsuit with a hood recommended for comfort. Divers should exercise caution regarding variable visibility and maintain close contact with their guide.

Swanpool Beach in Cornwall provides a straightforward shore entry for divers exploring local reef and wreck structures. The site is suitable for beginners, with depths ranging from 4 to 7 metres and an average depth of 5 metres. Visibility typically spans 5 to 10 metres, and water temperatures fluctuate between 10C and 17C throughout the year. Divers should remain vigilant regarding boat traffic in the area and must deploy a surface marker buoy before surfacing. Facilities including a dive shop, parking, toilets, and a cafe are available on site. Guided tours are offered for those seeking local knowledge, and night diving is permitted.