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Dublin: 4 °C Friday 21 February, 2020

Warning lifted as lion mane jellyfish no longer present at popular Dublin swimming spot

The sting of lion’s mane jellyfish can cause nausea, vomiting and respiratory distress.

Lion's Mane jellyfish
Lion's Mane jellyfish
Image: DLRCC

Updated Jun 14th 2019, 6:08 PM

A WARNING HAS been lifted after lion’s mane jellyfish were spotted at Sandycove yesterday. 

The large sea creatures were spotted in the waters near the popular Dublin swimming spot yesterday afternoon, Dún Laoghaire-Rathdown County Council said. 

Although bathing was still allowed, swimmers were advised to proceed with caution. Red warning signs were put in place until further notice. 

The sting of a lion’s mane jellyfish can cause nausea, vomiting and respiratory distress. If a person is stung and suffers from any of these symptoms they “should seek medical attention immediately”, the council said. 

It added that lifeguards at Sandycove are keeping “a vigilant eye” on the waters around the bay for the jellyfish, which can also sting when washed up. 

Although usually much smaller in size, lion’s mane jellyfish can grow up to two metres in diameter. 

Following an investigation, the Council has this afternoon said there were no sightings of the jellyfish in the bathing area or the beach in Sandycove. 

Warning notices and red flags have been removed. 

“While there are no sightings of these jellyfish in the bathing area they may be still present further out into the bay,” the Council said. 

Baths in the area are being warned they should continue to exercise caution for the next 24 hours. 

With reporting by Hayley Halpin

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