Grey Seal on the Sefton Coast: When and Where to See Them

14 July 2026

Identification

The grey seal (Halichoerus grypus) is unmistakable at close range. Adults are large: males (bulls) reach 2.3 to 2.5 metres and can weigh up to 300kg. Females (cows) are smaller, typically 1.6 to 2 metres and 100 to 150kg. The characteristic feature is the long, horse-like head profile, particularly obvious in bulls. Colouration is highly variable: males tend to be darker grey with pale patches, females lighter grey with darker spots.

In the water, grey seals are commonly confused with harbour seals (Phoca vitulina), which also occur on the Irish Sea coast. The key difference is the head shape: the grey seal has a long straight profile with nostrils parallel on the snout tip; the harbour seal has a more rounded, concave head profile with V-shaped nostrils meeting at the midline. At distance, size difference is the most reliable indicator.

Behaviour in the water: grey seals are curious and will sometimes approach swimmers or kayakers closely. They frequently adopt the 'bottling' position: floating vertically in the water with head raised, apparently sleeping. On beaches, hauled-out seals sleep deeply and are easily startled. Give plenty of space.

When to See Them on the Sefton Coast

Grey seals are seen on the Sefton Coast throughout the year, with the most reliable period being autumn and winter (October through March). The population on the Irish Sea coast increases in autumn as seals disperse from breeding colonies on the north Wales and Cumbrian coasts. Individual seals may haul out on Sefton Coast beaches to rest, particularly at low tide on undisturbed sections of beach.

Summer sightings are less frequent but do occur. In July and August, grey seals are most often seen in the water rather than hauled out, occasionally visible from Formby Point as dark heads in the nearshore swell or as distant shapes hauled on sandbanks exposed at low tide.

The breeding season for grey seals in the Irish Sea is primarily October to December, at colonies on rocky shores and beaches further north. Sefton Coast beaches are not breeding sites.

Where to Look

Formby Point is the best land-based vantage point for grey seal sightings on the Sefton Coast. The point extends into the Irish Sea and provides clear views of the nearshore water and exposed sandbanks at low tide. Scan the water with binoculars at low tide for dark heads or the larger bulk of hauled seals.

Ainsdale beach has produced haul-out records on the lower beach beyond the little tern colony area. Access this section by walking south from Formby Point or north from the Ainsdale beach car park (Shore Road, PR8 2QB).

The walk from Formby Point south toward Ainsdale at low tide on a calm autumn or winter morning is the most reliable approach for grey seal sightings on this coast. Early morning before beach users arrive in numbers is the best timing.

If You Find a Seal on the Beach

Seals haul out to rest and do not necessarily need rescue. A seal lying on a beach is not automatically in distress. Do not approach closely, do not attempt to return it to the water, and keep dogs away. A seal that remains on the beach for more than 24 hours, shows signs of injury, or is visibly in distress (laboured breathing, wounds, entanglement) should be reported to the BDMLR (British Divers Marine Life Rescue) on 01825 765546.

Approaching hauled seals causes significant stress and can prompt them to flee to the water in a state of exhaustion. Stay at a minimum of 50 metres from any hauled seal and observe from a distance.