A herd or pod C0mm0n (Harbour) seals and seal pups basking and playing on the rocks near Beachy Head, East Sussex, UK Thsee adult harbour seals are up to 2 metres in length Theis colony of .Common Seals regularly haul out onto therocks at low tide to take a nap, and it’s one of few breeding grounds in the English Channel. Their pups are born in June and July and can swim and dive just hours after birth, which is crucial if they’re born on shallow rocks soon to be submerged by the incoming tide.While seals may allow people to approach them closely, they do not appreciate excessive disturbance and may display aggression or attempt to bite if they feel threatened. Please respect these powerful wild animals and keep your distance.