Newcastle Harbour Slipway provides a shore entry point at the southern end of the Newcastle promenade. This site features a kelp forest habitat and is suitable for beginners, with depths typically ranging between 1 and 3 metres. The environment is sheltered, making it a practical location for snorkelling. Divers and snorkellers should remain aware of boat traffic in the vicinity of the harbour walls. Facilities including parking, toilets, and showers are available for visitors. The water temperature varies throughout the year, ranging from 8C in March to 15C during the summer months. A typical session at this site lasts approximately 45 minutes, with mild currents present.

Tyrella is a shore-entry snorkel site located in Strangford Lough, Northern Ireland. The area features rocky reefs at the eastern end of the beach, providing a stable habitat that transitions from the main sandy bathing zones. The site is suitable for beginners, with depths ranging from 1 to 10 metres and an average depth of 5 metres. Conditions vary, and snorkellers should be aware of potential surf and strong currents in the area. Facilities available at the beach include parking, toilets, showers, changing rooms, and first aid services. The water temperature fluctuates between 8C and 15C throughout the year.

Bloody Bridge Rock Pools, located where the mountains meet the sea in Strangford Lough, offer a unique snorkelling environment within granite basins. The site features deep river pools and rock slides as the river flows toward the Irish Sea. Snorkellers should be aware that conditions vary, and the site is best suited for those with intermediate experience. Access is via the shore. Water temperatures fluctuate throughout the year, ranging from 8C in March to 15C during the summer months. The topography is defined by the dramatic granite formations and the rushing river water.

Bloody Bridge Coastal Entry is a rugged site where the Mourne Mountains meet the Irish Sea. The shoreline features deep rock fissures and platforms that form natural channels suitable for snorkeling. Access is via a short hike along the coastal path. Water temperatures at this marine site vary between 8C and 15C throughout the year. The habitat supports a variety of temperate marine life, including various reef fish and invertebrates typical of the region. Due to the nature of the rocky entry and coastal conditions, this site is best suited for intermediate snorkelers.

Maggie's Leap is a dramatic chasm located in the cliffs south of Newcastle within Strangford Lough. This site features vertical underwater walls adorned with sponges and anemones. Access is primarily by boat or kayak, and the location is suited for advanced snorkellers due to the nature of the terrain. Water temperatures in the area fluctuate between 8C and 15C throughout the year. The site is noted for offering some of the best visibility in the region, providing a clear view of the cliff topography and the sessile marine invertebrates that colonise the rock faces.

Minerstown is a shallow reef site located in Strangford Lough, offering an accessible shore entry for both divers and snorkellers. The topography consists of rocky outcrops and honeycomb worm reefs, providing a varied underwater landscape. Depths at this site range from 2 to 10 metres, with an average depth of 6 metres. Conditions can vary, with moderate currents and potential surf. Due to the water temperatures, which range between 9 and 15 degrees Celsius, thermal protection is required. The site is suitable for beginners, with typical dives lasting around 60 minutes. Hazards to be aware of include entanglement, strong currents, and surf.

Rossglass Beach in Strangford Lough offers a relaxed shore-entry snorkelling experience suitable for beginners. The site features an expansive beach with numerous rock pools and shallow channels that become exposed at low tide. Divers and snorkellers can explore depths ranging from 1 to 5 metres, with an average depth of 3 metres. Conditions are generally mild, though visibility varies between 3 and 10 metres. Water temperatures remain cool, fluctuating between 9C and 15C throughout the year. Species recorded around this area include various crabs, sea stars, brittle stars, and occasionally larger marine life such as seals or octopuses. Be aware of jellyfish, which are a known hazard in these waters.

Annalong Rock Pools, located in the Mourne Mountains, offer a freshwater snorkeling experience within a series of natural pools. The largest pool provides sufficient depth for full submersion, set against a backdrop of granite boulders. The water is peaty in appearance. Access is via the shore, and the site is suitable for beginners. Water temperatures fluctuate throughout the year, ranging from 8C in March to 15C during the summer months of July, August, and September. As a shore-based activity, it is rated 3 out of 5 for snorkeling.