More Man O’ War Wash Up

13th November 2017

More Portuguese Man o’ War have washed up on Guernsey’s coastline.

They’ve been spotted along the west coast over the weekend between Rocquaine and Chouet. In a statement we’re told there were more than had previously been seen locally:

Portuguese Man o’ War (Physalia physalis) have washed up again, in larger numbers than previously encountered, on the west coast of Guernsey this weekend from Rocquaine to Chouet. The highest numbers have been found at Cobo and Vazon, with over 40 found on Cobo and over 30 found on Vazon. Many of those found over the weekend still had their tentacles attached.  The tentacles can deliver a painful sting, which can, on rare occasions, be fatal.


A Portugese Man O’ War which had previously washed up on Guernsey’s coastline.

Many of those which washed up this weekend still had their tentacles attached. They can deliver very painful stings, which can on rare occasions be fatal.

The States of Guernsey’s Agriculture, Countryside and Land Management Services team is now telling beachgoers not to touch any jellyfish they find on the beach. If members of the public wish to swim in the sea, they are advised to stay alert and to wear a full length wetsuit.

Dog owners are advised that tentacles remaining on the sand can still deliver a painful sting to animals as well. Tentacles that have become unattached from the float or sail are not likely to be visible as they may have lost their blue colouration, therefore dog owners may wish to exercise their pets away from west coast beaches for the time being.

ACLMS is now asking all members of the public to remain vigilant when using any of the Bailiwick’s beaches, and to report any sightings by telephoning 234567 or emailing

If possible any one spotting a Portugese Man O’ War should email a photograph to help confirm the sighting for official records.

MAN O'WAR image

If anyone believes they have been stung, the NHS website recommends removing any remaining tentacles, bathing the area with seawater to help neutralise it, and immersing the area in hot water to help relieve the pain.

If pain is long lasting, other symptoms develop, or the area becomes infected, further medical assistance should be sought. The NHS guidelines can be found here.

More information on the jellyfish species found around the British Isles can be found on the Marine Conservation Society’s website, which has a species identification guide.

Reports and photographs of jellyfish seen on Guernsey beaches are welcomed by the Marine Conservation Society. Send information here.


Share this story: