The UK might not be the first place you think of for turquoise waters and colourful reefs, but it’s home to some seriously underrated spots for snorkelling, believe it or not.
From hidden bays to marine reserves bursting with life, there’s plenty to discover if you’re up for a little adventure — and a wetsuit to keep warm, of course. Here are some of the best UK snorkelling sites that prove you don’t need to travel abroad to find captivating underwater scenes.
1. St. Abbs and Eyemouth Voluntary Marine Reserve, Scotland
Nestled on Scotland’s southeast coast, this protected area is brimming with rocky reefs, kelp forests, and a surprising variety of fish. Thanks to colder waters, you’ll spot hardy species like wolf fish, ballan wrasse, and the occasional seal cruising by. The underwater rock formations also create mini-canyons and gullies to explore—perfect for a bit of snorkel exploration.
Visibility can be pretty good on calmer days, so plan your trip when weather conditions are favourable. Bring a decent wetsuit or drysuit because the North Sea can give you quite the chill, but the experience is worth the goosebumps.
2. Isles of Scilly, Cornwall
When it comes to stunning beaches and clearer waters, the Isles of Scilly are a UK gem. Off the southwestern tip of Cornwall, these islands boast shallow bays that light up with marine life. You can find sea hares, shoals of sand eels, and even the occasional sunfish in the warmer months.
Different islands offer unique snorkelling opportunities, so island-hopping is a fun way to experience more variety. With the mild climate and soft sands, you might even forget you’re still in England—just don’t skip on the wetsuit, as it’s not quite tropical warm!
3. Lundy Island, Devon
Lundy sits at the meeting point of the Atlantic and Bristol Channel, creating a unique underwater world. Famous for its Marine Protected Area, Lundy offers encounters with playful seals that often come right up to investigate. Clear waters around the island reveal kelp forests, sponges, and anemones in all sorts of colours.
Access is usually by ferry from Ilfracombe or Bideford, so day trips or short stays are common. Snorkelling among inquisitive seals is easily the highlight, so bring a camera if you can—it’s not every day you get a chance to make friends with these curious locals.
4. Farne Islands, Northumberland
If you’ve ever dreamed of swimming alongside grey seals, the Farne Islands might become your favourite spot. Situated off Northumberland’s coast, these rocky islets are teeming with seal colonies that often pop up to greet snorkellers. They’re curious creatures, and respectful interactions can be both thrilling and endearing.
The Farnes can be a bit remote and conditions can be choppy, so going with a guided tour or local charter is wise. Aside from seals, you’ll spot seabirds diving from above, making the overall marine environment feel extra wild and untouched.
5. Skomer Marine Conservation Zone, Wales
Wales might be known for its rolling hills, but just offshore, Skomer Marine Conservation Zone near Pembrokeshire teems with aquatic life. Think shoals of sand eels, bright wrasse, and even the occasional visiting porpoise or seal. The seabed is decorated with colourful sponges and anemones, giving you plenty to marvel at.
Since Skomer is protected, the ecosystems here flourish more vibrantly than many other coastal areas. Stick to designated spots and respect local guidelines so you can help keep this zone healthy and pristine for future snorkellers.
6. Lulworth Cove, Dorset
Part of the Jurassic Coast, Lulworth Cove’s horseshoe shape creates a sheltered bay that’s perfect for relaxed snorkelling. The water can be relatively calm, and you’ll often catch glimpses of marine life among the rocks near the shoreline—small fish, crabs, and maybe a curious cuttlefish if you’re lucky.
The cove’s geology is also a big draw; it’s surrounded by iconic cliffs and rock formations that hint at millions of years of Earth’s history. On the surface, you can explore the famous Stair Hole or take a short walk to Durdle Door after you’ve finished splashing around.
7. Kimmeridge Bay, Dorset
Another Jurassic Coast treasure, Kimmeridge Bay is loved for its rock pools and easy shoreline snorkelling. At low tide, the rocks form little habitats for blennies, crabs, and starfish. At higher tide, you can wade out and check out the kelp-covered reefs further from shore.
Make sure to drop by the on-site Wild Seas Centre (if open) to learn about local wildlife before heading in. It’s a superb family-friendly spot where even snorkelling beginners can enjoy a glimpse of underwater life without heading too deep.
8. Sound of Mull, Scotland
For those who aren’t afraid of colder waters, the Sound of Mull on Scotland’s west coast is a prime spot. Known among divers for its shipwrecks, snorkellers can still find plenty to see in the shallower sections—crabs, fish darting among kelp forests, and enchanting underwater topography shaped by tides.
This area can have strong currents and shifting weather, so it’s wise to go with local knowledge or a guide. If you time it right, calm waters reveal surprisingly good visibility, letting you soak up the dramatic underwater scenery unique to Scotland’s rugged coastline.
9. Isle of Arran, Scotland
Often called “Scotland in miniature,” the Isle of Arran delivers a bit of everything, including snorkel-worthy spots in its waters. Check out the south end of the island for some sheltered bays where you’ll come across sea urchins, anemones, and darting fish. The water can be chilly but rewarding if you’re up for it.
Ferry access from the mainland is fairly straightforward, and the island itself is scenic, making it perfect for a combined hiking and snorkelling trip. Just ensure you have a decent wetsuit and maybe a warm thermos of tea ready for when you emerge.
10. Anglesey, North Wales
Anglesey’s rugged coastline and clear waters on calmer days can be a real treat. Areas like Trearddur Bay offer rocky coves and inlets that provide a safe haven for smaller fish and crustaceans. It’s also not uncommon to see seals moseying around, giving snorkellers a memorable encounter.
While conditions in North Wales can be hit or miss, sunny, calmer spells can reveal better visibility than you might expect. The local snorkelling community recommends checking tide times and weather forecasts to get the most out of your day—and don’t forget to enjoy the island’s scenic charm once you’re back on shore.
