The coast never really closes for the season. On a January walk you might have a whole bay to yourself apart from a line of oystercatchers hunched against the wind; by June that same beach is loud with terns and smelling of guano. What you see changes week by week, and knowing roughly what to expect turns a pleasant stroll into something closer to a treasure hunt.
Below is a rough calendar for the four main groups you are likely to meet from a coastal path: seabirds, seals, cetaceans and the creatures in the pools under your boots. Treat it as a set of expectations, not a promise. Local timing shifts with latitude, weather and the particular colony nearest to you.
Start with the tides, not the calendar
Month matters, but tide and wind decide what you actually see on the day.
- Rockpools: go on a low spring tide, which falls around the new and full moon. The biggest pools and the lowest bands of weed are only exposed for an hour or two either side of low water.
- Seals and seabirds on the shore: rising tides push them closer to the path, but also flush them earlier. Watch from above and behind rather than trying to get level.
- Dolphins and porpoises: flat, calm seas with a light offshore breeze are best. If the sea is a mess of whitecaps, save your neck muscles for another day.
- Sea-watching after a gale: a north-westerly blow in late summer and autumn brings shearwaters, skuas and petrels close to headlands for a day or two. That is when a headland bench beats a beach.
A local tide table, either printed or on your phone, is more useful than any app promising to identify things for you.
Winter: seals, divers and empty sand
This is the quietest and, for many people, the best season. Grey seals pup from roughly October through to December in places such as the Lincolnshire and Norfolk coasts and the Farnes, with some western and Scottish colonies running later, into January or even February. Pups are hauled out on beaches you would otherwise walk straight across, so scan ahead and give any group of seals a wide berth. A disturbed mother may abandon a pup.
Estuaries fill with waders: dunlin, knot, bar-tailed godwit, curlew, redshank, turnstone and sanderling, all working the mud and wet sand. On rocky shores at high tide, purple sandpipers tuck into the splash zone, absurdly tame and easy to overlook. Offshore, look for red-throated and great northern divers, great crested grebes, and rafts of eider, common scoter and goldeneye. Cold, clear mornings with a low sun are ideal, because the birds sit still and the light comes from behind you.
Spring: the cliffs wake up
From late February the ledges start filling. Guillemots, razorbills and kittiwakes return first, gannets follow, puffins usually appear in April, and terns arrive through April and May. By May a good cliff — Bempton, the Farnes, the Pembrokeshire islands, the Isle of May — is a wall of noise and traffic.
On land, wheatears and whitethroats move through coastal scrub, and small passage waders drop onto wet fields behind the dunes. Walk the cliff-top path rather than trying to get below the colony: nests are fragile, and a ledge that looks empty often is not. A telescope set up on a bench will show you far more than a scramble down a crumbling slope ever will.
Summer: dolphins, basking sharks and busy pools
Warm, settled weather brings the marine mammals within reach of a headland. Bottlenose dolphins are resident in Cardigan Bay and the Moray Firth and turn up regularly off Cornwall and the south-west; harbour porpoises are widespread but small and shy, often just a rolling back and a puff of spray. Common dolphins gather in the south-west in summer. Basking sharks cruise the western coasts from around May to September, a slow dark fin with a snout in front of it.
Pick a high point with a wide view, sit down so you are not silhouetted, and scan slowly in strips rather than staring at one spot. Give it twenty minutes. Look for a blow, a fin breaking cleanly, or a cluster of gulls hovering over something the size of a bus. Polarised sunglasses genuinely help.
Puffins are still busy in June and early July, ferrying sand eels to burrows, then most head to sea by August. Rockpools are at their richest now, the water at its warmest and the fry of blennies, gobies and butterfish hiding under the weed.
Autumn: migration, moulting and the first pups
September and October bring waders back in numbers and a big movement offshore. Skuas, Manx shearwaters and the occasional storm petrel pass headlands, especially when a westerly gale has pushed them inshore. Pink-footed geese arrive from the north, and duck numbers build on estuaries.
Grey seal pupping begins again, so check before you walk a beach you know well in summer. The strandline is worth a slow look too: mermaid's purses, whelk egg cases, cuttlebone and the occasional mermaid's purse chain tell you what is living just offshore.
Rockpool life, all year
Pools are never empty, though they are livelier in the warmer months. Standard residents include beadlet and snakelocks anemones, limpets, periwinkles, topshells, dog whelks, shore crabs, velvet swimming crabs, common prawns and small fish such as blennies.
- Check the tide table and go on a spring low.
- Work the biggest, weediest pools and any overhang or crevice.
- Wet your hands before touching anything, and use a clear dish or simply your camera.
- Lift stones carefully and put them back exactly as they were, the same way up.
- Return every creature promptly to the pool you found it in, and take nothing living home.
What to take, and how to behave
Binoculars of around 8x42 will cover most situations; a scope is a luxury on a cliff-top. Add polarised sunglasses, a tide table, a warm layer, boots with real grip, and a lead for the dog. Keep dogs close and under control near birds and seals, and give hauled-out seals a good hundred metres — use the zoom, not your feet. Never chase, corner or feed anything.
On safety: cliff edges crumble, estuaries hide mud and fast-moving water, and tides can cut off a headland faster than you would expect. Tell someone your route, carry a phone, and check the local tide and weather before you set off. If you want to know what is around this week, local wildlife trust newsletters and reserve noticeboards are far more useful than general guides. Then put the book away, sit down on a bench, and watch.
Photo: Nagihan Yilmaz / Pexels
