There are several small harbours on the coast of Dalkey. Bulloch Harbour is the biggest; it is towards the northern part of Dalkey at Harbour Road and is a declared seal sanctuary. Coliemore Harbour is smaller and in the southern part of Dalkey at Coliemore Road. In the Middle Ages, Coliemore was the main harbour for Dublin City. Bulloch Harbour is still a working harbour with boats that fish for lobster and crab, and mackerel in season. It is also used by locals and tourists who hire boats for nearby fishing, sightseeing and for getting to Dalkey Island.