One of the well-known 'tidal gates' on the west coast of Scotland. The tide can run at up to 8knts through here so care is needed with timing (most yachts can't sail at anything like that speed so cannot go against the tide). There are also large and violent standing waves at peak tide flow.
Uploaded to Geograph by Gordon Brown on 23 June 2015
Photo © Gordon Brown, 23 June 2015. Licensed for reuse under this Creative Commons licence