Scotland’s largest land-locked lagoon, the Loch of Strathbeg, lost its sea connection in 1720 when sand-blown from a massive storm filled in the channel used by coastal trading vessels. Today the loch behind its dune system is of large importancel. It is an RSPB reserve.

The Loch of Strathbeg (also known as Loch Strathbeg) is a designated Special Protection Are. It is located near to Rattray and Crimond in Aberdeenshire, Scotland.

The loch is maintained by the RSPB and around the loch there are three hides from which visitors may watch the birds and other wildlife. Access to the loch is through Crimond airfield where there is a car park at the edge of the reserve. There is also the 'Starnafin Centre' from which visitors may also watch the birds from and find out more information about which birds and animals are present locally.