Sir, – An algal bloom has turned Northern Ireland’s Lough Neagh green (Opinion & Analysis, July 23rd). Not so long ago, an algal bloom turned the Republic of Ireland’s Dublin Bay orange (“Algal bloom the cause of Sandycove ‘orange slick’, tests show”, News, June 25th, 2019).
Aithníonn ciaróg ciaróg eile. – Yours, etc,
MICHAEL KEEGAN,
Booterstown,
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Co Dublin.