People in Ardmore are being warned to be cautious on the strand after a dangerous Portuguese Man O'War organism washed up on the shore over the weekend.
The Ardmore Coast Guard Unit said the organism (which is a siphonophore but often referred to commonly as a jellyfish) may still be able to inflict a serious sting to any person, child or even a dog that comes into contact with it.
The coastguard asked: "Please give it a wide berth and keep children and your dogs well away from it !"
This latest sighting follows numerous discoveries of the marine creatures along the Cork coast in the past week.
Last week Fountainstown Beach became the third Cork beach to be red-flagged due to the arrival of multiple siphonophores, the Irish Examiner reports.
Siphonophores can be painful to humans and, on rare occasions, can even be fatal.
Red flags were also raised at Garrylucas and Owenahincha beaches while one was also found at Garretstown.
Cork County Council has advised the public to be aware of siphonophores both the sea and on shores.
The public are advised to not get stung when aiding others, remove any attached tentacles with a gloved hand, stick, or towel (none of these available use your fingertips).
Do not rub the affected area as this may result in further venom release, rinse the affected area copiously with seawater but do not use freshwater, vinegar, alcohol or urine.
Apply a ‘dry cold pack’ to the area such as placing a cold pack or ice inside a plastic bag and then wrap this package in a t-shirt or other piece of cloth.
Hot water can be used for such stings at approximately 45C for 20 minutes, but if a person is suffering from swelling, breathing difficulties, palpitation or chest tightness then transfer to the nearest emergency department urgently.
Siphonophores can grow to lengths of 130 feet or 40 metres, longer than the blue whale, which is usually considered Earth's largest animal. Although a siphonophore may appear to be an individual marine organism, each specimen is a colonial organism.
