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ARCHIVE: Swathes of Lion's Mane jellyfish land on Portmarnock beach as council issue warning

Footage captured on the weekend shows large swathes of Lion's Mane jellyfish washing up on Portmarnock beach. Fingal County Council also issued a warning to bathers in the area "We have got some reports of Lions Mane Jellyfish at Malahide and Low Rock. Please exercise caution at beaches as a sting can cause nausea headaches and other symptoms". While the Lion's Mane does not live in Irish waters, it is known to frequent the cooler waters of the Irish Sea.

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