Moray Firth the Moray Firth and Highland, Moray and Aberdeenshire to the south. The firth has more than 800 kilometres (about 500 miles) of coastline, much of which is cliff. A number of rivers flow into the Moray Firth, including the River Ness, the River Findhorn and the River Spey. Various smaller firths and bays are inlets of the firth, including the Cromarty Firth and the Dornoch Firth. The Pentland Firth has its eastern mouth at the Moray Firth's northern boundary. The Moray Firth is effectively two firths, the Inner Moray Firth , which was traditionally known as the Firth of Inverness,
Firth of Clyde each other. Sometimes called the Clyde Waters, this water body is customarily considered an element of the Irish Sea. The ferry services are run by Caledonian MacBrayne and by Western Ferries and many of the routes are lifeline services for communities living in remote areas. A great number of sea lochs adjoin the Firth, the largest being Loch Fyne. The Cowal peninsula extends into the Firth of Clyde and forms the main upper firth west shoreline. The main town on the Cowal peninsula is Dunoon. These routes across the Firth of Clyde save time, rather than traveling "round by road",