Harbour seals resting on beaches and rocks are frequently disturbed by humans and dogs, causing welfare harm and pupping failure.
Seals repeatedly disturbed from haul-out sites expend energy in unnecessary escape responses, reducing time budgets for essential resting. Pups disturbed during the vulnerable early period may be permanently abandoned by mothers. Chronic disturbance at important haul-out sites reduces population-level welfare. Simple distance-keeping prevents most harm.