The seaside town of Bangor lies on the coast of north Co Down on the southern shore of Belfast Lough, some 18km from Belfast and around 10km from the Copeland Islands, with the renowned Copeland Bird Observatory. Bangor seafront is dominated by a 560-berth marina and a commercial fishing jetty. Amongst all the hustle and bustle of the marina is to be found a small breeding colony of Black Guillemots Cepphus grylle.