Rumbling Kern is a rocky cove located on the Northumberland Coast, characterised by deep chasms and rock-cut pools. The topography features narrow gullies and sheltered inlets, providing a distinct geological landscape for snorkelling. Conditions at this site are variable, with strong currents and surf present, making it suitable only for advanced snorkellers. Water temperatures range from 7C to 15C throughout the year. Species recorded around this area include various crustaceans such as squat lobsters, common lobsters, and crabs, as well as sea slugs, brittle stars, and occasional sightings of grey seals and cuttlefish.

Boulmer Haven is a traditional fishing village featuring a natural break in the reef, which provides a sheltered area suitable for snorkelling. The site is accessible from the shore and is considered appropriate for beginners. The outer reefs are characterised by thick kelp growth. While marine life varies, species recorded around this area include squat lobsters, sea slugs, common lobsters, giant jellyfish, crabs, sea hares, rock crabs, brittle stars, grey sea slugs, common sea stars, snails, European green crabs, shannies, and sea squirts. Water temperatures at this location fluctuate between 7C and 15C throughout the year.

Newton Haven is a sheltered bay on the Northumberland Coast featuring a natural rock harbour that provides protection from the main North Sea swell. This shallow reef site is suitable for beginners, with an average depth of 3 metres and a maximum of 5 metres. Access is via the shore, and divers encounter mild currents. The area includes extensive rock pools at low tide. Species recorded around this area include Gray Seal, European Common Cuttlefish, Squat Lobster, Common Lobster, Lumpfish, Wrasses, and various nudibranchs and crustaceans. Facilities at the site include parking, toilets, and a cafe. Be aware of sea urchins when entering or navigating the reef.

Football Hole is a secluded white-sand bay located on the Northumberland Coast. The site features rocky headlands on either side of the bay that provide opportunities for shallow reef exploration. Access is by foot from the shore, making it suitable for beginners. Conditions are generally mild, though water temperatures are cool, ranging from 7C to 15C throughout the year. A dry suit with a warm undersuit is recommended for most of the year to ensure comfort during water activities. The site is rated 3/5 for snorkelling, offering a quiet environment for those exploring the coastal reef structures.

Yewglen is a shallow marine dive site located along the Northumberland Coast. The site features a consistent depth of approximately 5 metres. Given the shallow nature of the location, it is suitable for divers seeking a straightforward, low-depth experience. Water temperatures at this site vary throughout the year, ranging from 7C in the late winter and early spring to 15C during the peak of August. Divers should be prepared for these temperate conditions when planning their visit to this coastal location.

Beadnell Point on the Northumberland Coast offers a varied underwater landscape featuring a reef that extends 150 metres seaward. Divers and snorkellers can explore a series of gullies and cracks within the reef structure, alongside a kelp forest. The site is also home to the shallow wreckage of the steamer Yewglen. Depths at this location range from 8 to 14 metres. Access is via a shore entry, and conditions are generally characterised by mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 7C and 14C throughout the year, making this site suitable for intermediate divers and snorkellers.

Lady's Hole is a shore-entry reef and kelp forest site located on the Northumberland Coast. Suitable for beginners, the site offers depths ranging from 5 to 12 metres with an average depth of 10 metres. Divers and snorkellers should be aware of potential hazards including entanglement, surf, and surge. Conditions are generally mild with visibility between 10 and 15 metres. Water temperatures fluctuate throughout the year, ranging from 7C in late winter to 15C in August. Facilities available nearby include parking, toilets, changing rooms, air fills, and guided tours.

Lady Hole is a shallow shore-entry reef located on the Northumberland Coast. Reaching a maximum depth of 12 metres, the site is suitable for beginner divers. The environment features temperate marine life, including common sightings of snails and European Green Crabs. Divers may also encounter squat lobsters, sea slugs, brittle stars, various crab species, sea hares, sea stars, sea squirts, shannies, and rockpool prawns. Water temperatures range from 7 to 15 degrees Celsius, making a drysuit recommended. Entry is via the shore, where slippery rocks require careful footing. Conditions are subject to variable swell, so local checks are advised before entering the water.