Grey and harbour seals are popular wildlife tourism subjects. Poorly managed seal watching causes disturbance that disrupts haul-outs, separates mothers from pups, and causes stress.
Repeated disturbance from photographers and tourists at seal haul-out sites causes chronic stress measurable through cortisol levels. Stampedes injure and kill pups that cannot move quickly. Separated pups that are unable to find mothers suffer hypothermia and starvation. Well-intentioned wildlife watching can cause significant harm without proper guidance.