 The Seven Bays region of St Merryn includes (from west to east) Porthcothan Bay, Treyarnon Bay, Constantine Bay, Booby's Bay, Mother Ivey's Bay, Harlyn Bay and Trevone Bay.The nearest bay to St Merryn village centre is Harlyn Bay ( north).Interesting features include the seaside cliffs, like the Marble cliffs, Tregudda gorge, Trevose Head and the collapsed cave known as Round Hole.