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Location: South-east of Spurn Head at entrance to River Humber, England.
Location: Haisborough Sand off Norfolk, England.
Location: Margate, Kent, England.
Location: Eilean Trodday in the Little Minch, Scotland.
Location: Off the west coast of Scotland.
Location: Falmouth Bay, England.
Location: Carlingford Lough, Northern Ireland.
Location: Haisborough Sand, North Sea, England.
Location: On the Shingles Bank in the Needles Channel off the south coast of England.
Location: Approaches to Rye Harbour, England.
Location: Dadanwei Shuidao channel, 15 miles south of Hong Kong.
Location: Off the Darß peninsular, Baltic Sea, Germany.
Location: Long Sand bank in the Wash, near Boston, Lincolnshire, England.
Location: Off Ardglass, Northern Ireland.
Location: Baia da Praia do Norte, Faial, Azores.
Location: Hurst Spit on the south coast of England.
Location: Stronsay Firth, near the Orkney Islands, Scotland.
Location: The Downs, off Deal, Kent, England.
Location: South of Cuttyhunk Island, United States of America.
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