People along the East Coast of Ireland are being advised to watch out for dangerous jellyfish.
Meath County Council have tweeted the warning, along with a picture of a large Lion's Mane jellyfish, that was found washed up on Bettystown beach.
WARNING - JELLYFISH Be extremely vigilant for dangerous Lion's Mane jellyfish at our beaches https://t.co/CkuWjJ0zbJ pic.twitter.com/r9q8Lg8z5G
— Meath County Council (@meathcoco) July 19, 2016
A sting from a Lion's Mane can be very painful and needs urgent medical attention.
It can cause anaphylactic shock for those who are allergic, but like a bee sting, you won't know until it happens.
Irish Water Safety guidelines advise people not to rub the affected area, as this may result in more venom release. The area should be rinsed with sea-water, vinegar, or alcohol.
People are advised to seek further medical attention if they experience anything more than minor discomfort. If patients are suffering from swelling, breathing difficulties, palpitation or chest tightness they should be urgently taken to the nearest emergency room.
