Spotting Atlantic Grey Seals Along the Coast

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8 Jul 2026

Spotting Atlantic Grey Seals Along the Coast

Why Wales Is a Stronghold for Atlantic Grey Seals

Britain holds a remarkable share of the world's Atlantic grey seals — somewhere around 40 per cent — and Wales does a great deal of that heavy lifting. The rocky skerries, storm-beaten offshore islands and sheltered sounds of Pembrokeshire, Cardigan Bay and Anglesey provide exactly what grey seals need: quiet ledges to haul out on, deep water nearby for feeding, and minimal human traffic. The result is that you can stand on a Welsh clifftop almost anywhere along the west coast and watch wild, unmanaged seals going about their lives just a few hundred metres away.

Grey seals are big animals. Bulls can reach two and a half metres and weigh over 300 kilograms, with a heavy, sloping "Roman" nose and dark, blotchy coats. Cows are lighter and more silvery, often speckled. If you are trying to tell them apart from harbour seals (sometimes called common seals), look at the nostrils: grey seals have parallel nostrils that do not meet at the bottom, and their faces are longer and flatter. Harbour seals have a distinctly dog-like profile with a V-shaped nostril line.

Working With the Tide, Not Against It

Grey seals are tidal animals. They often feed at sea on rising water, then come ashore to rest on reef tops, sandbanks and rocky islands as the tide falls. That means your viewing window is usually the two hours either side of low tide, when the haul-out sites are exposed and the animals are settled.

Absolute low water is not always best — the animals are still moving about and settling. Arriving an hour before low water and staying put is often the most productive approach, because the seals grow used to a stationary figure and go back to sleeping. Good places to look include the Pembrokeshire coast around Ramsey Sound and Strumble Head, the offshore islands of Cardigan Bay, the cliffs and coves of the Llŷn Peninsula, and the rocky shores of Anglesey and Bardsey. Scan for what look like bottle-shaped heads bobbing in the swell, or pale shapes against dark rock.

Choosing a Viewing Point That Keeps Everyone Safe

The best viewpoints are clifftop paths, headlands and elevated rocky outcrops where you are above the animals and not blocking their route to the sea. A few principles will keep disturbance to a minimum:

Stay high and stay back. On land, keep at least 100 metres between you and any seal — more if the site is a pupping beach.
Never walk out onto a haul-out beach or rocky causeway, even at low tide. Seals need that ground to rest and to escape.
Never position yourself between a seal and open water. If you are downwind and upslope, so much the better.
Keep dogs on a short lead and away from the edge. A single barking dog can push an entire colony into the sea.
Avoid approaching from the seaward side, whether in a kayak, paddleboard or boat. Coming at seals from open water is the most disturbing angle of all.

Reading the Signals: When You Have Got Too Close

Seals tell you plainly when you are a nuisance. A resting animal that lifts its head and stares in your direction is alert, not relaxed. If several do it, or if any start shuffling towards the water, you are too close. A full stampede into the sea wastes energy, separates mothers from pups and can cause injuries on sharp rock.

Keep visits to a quarter of an hour or so, then move on. If you are in a group, spread out along the clifftop rather than clustering at one spot. Speak quietly — sound carries a long way over water — and resist the urge to whistle or call to get a reaction.

Binoculars and Fieldcraft for Better Views

You will see far more with the right glass than you ever will by creeping closer. A pair of 8x42 binoculars is the ideal all-rounder for coastal work; 10x42 gives a bit more reach on big cliffs but is harder to hold steady. A small monocular slips into a coat pocket for quick checks, and a spotting scope on a tripod turns a distant skerry into a close-up study of whiskers and scars. Whatever you carry:

Wear the strap around your neck, not just over one shoulder, especially near cliff edges.
Keep binoculars inside your jacket in cold weather to stop the lenses fogging, and carry a microfibre cloth.
Brace your elbows on a gatepost, wall or rock to steady the view.
Scan slowly and deliberately — grey seals at rest look exactly like wet rocks until something moves.
Bright, calm, dry days with low sun are ideal; strong onshore wind makes both the sea and your hands unsteady.

Seasons, Pups and Leaving It as You Found It

Autumn is the big season. Grey seal pups are born between roughly September and November, dressed in fluffy white coats, and cannot swim properly for the first few weeks. Mothers leave them alone on the beach while they feed at sea — a lone white pup is almost never abandoned, so never touch one and never assume it needs rescuing. If you are genuinely worried, note the location and pass it to a local conservation charity rather than intervening.

Spring brings the moult, when seals spend long hours ashore and look particularly scruffy. Summer is quieter, with most animals feeding offshore. Wherever you go, stick to marked paths, take everything home with you, give cliff edges a wide berth, and let the seals decide how close the encounter gets. That is what makes a Welsh coastal walk worth remembering.

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5 Comments

Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply
- John Abraham says Jul 21, 2024 at 10:00am
  
  I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
  Reply
  - Robert Sonnysays Jul 21, 2024 at 10:00am
    
    I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
    Reply
Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply

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