North Dublin sea swimmers warned about Lions Mane Jellyfish whose stings cause nausea and cramps

By Emma Nevin

North Dubliners have been warned to watch out for Lions Mane Jellyfish after a "large amount" were spotted on a beach in the capital.

A member of the public alerted Fingal County Council that the jellyfish were on Donabate Beach over the weekend.

Fingal County Council issued a warning to Dubliners that the jellyfish may be found at other beaches, and that from the middle of August up to the second week of September "conditions are ideal" for the marine animals.

They said: "There will be a noticeable increase in their numbers on our beaches and in our waters.

"Fingal County Council is urging bathers to be extra vigilant on all of our beaches where Lions Mane jellyfish are found.

"Please note that even when they’re dead and washed up on the beach, the venom stays in their tentacles for a few days. With so many long trailing tentacles there is a chance you could still get stung, even when you try not to swim near them.

"Also, fragments of the lion's mane jellyfish's tentacles that break off in the water will sting you, even if they're no longer attached to the jellyfish."

The council also warned bathers of the nasty symptoms stings from the jellyfish can cause.

They said: "A sting from a Lion’s Mane jellyfish can cause nausea, sweating, cramps, headaches and other symptoms and severe stings should seek urgent medical attention."

If you are stung by a Lion’s Mane jellyfish, you should remove any attached tentacles with a gloved hand, stick, or towel.

The stung area should be rinsed with sea water and when you get home, you can bathe/rinse the area in warm to hot water.

You should also apply a "dry cold pack" to the area, for example, you could wrap ice in a plastic bag and then wrap a t-shirt around the package.

If you experience any symptoms worse than "minor discomfort" you should seek medical assistance.

If you have been stung, you should not rub the area or urinate on the sting.

You also should not put alcohol, vinegar or wrap a tight bandage on the sting.

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