At least 50 swimmers have been pulled from the North Sea at the seaside resorts of Kijkduin and Scheveningen in The Hague over the past two days, Nos tv reports.
Thirty-one people were rescued on Wednesday alone and two, a 16-year-old girl and 20-year-old woman, are still in hospital.
Many people are getting into trouble because the north-easterly wind is causing strong currents at low tide, police told Nos.
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