Venomous Portuguese man-of-war washed up on west Mayo beach
A LARGE number of Portuguese man-of-war have been washed up on a west Mayo beach.
Local man Lee Cluer got a surprise when he spotted them while out for a stroll at Killadoon Strand, Louisburgh, today.
“This is very unusual because they are a warm water species. Perhaps Storm Lorenzo forced them off their usual course and they ended up in west Mayo.
“Visitors to the beaches in the Killadoon area should not touch them. Their sting is extremely painful,” he explained.
He took photographs and kindly sent them to The Connaught Telegraph to warn the public..
According to National Geographic magazine, anyone unfamiliar with the biology of the venomous Portuguese man-of-war would likely mistake it for a jellyfish.
Not only is it not a jellyfish, the Portuguese man-of-war is a siphonophore, an animal made up of a colony of organisms working together.
The man-of-war comprises four separate polyps, the magazine explained.
“It gets its name from the uppermost polyp, a gas-filled bladder, or pneumatophore, which sits above the water and somewhat resembles an old warship at full sail. Man-of-wars are also known as bluebottles for the purple-blue color of their pneumatophores.
“The tentacles are the man-of-war's second organism. These long, thin tendrils can extend 165 feet in length below the surface, although 30 feet is more the average.
“They are covered in venom-filled nematocysts used to paralyze and kill fish and other small creatures.
“For humans, a man-of-war sting is excruciatingly painful, but rarely deadly. But beware—even dead man-of-wars washed up on shore can deliver a sting.
“Muscles in the tentacles draw prey up to a polyp containing the gastrozooids or digestive organisms. A fourth polyp contains the reproductive organisms.
“Man-of-wars are found, sometimes in groups of 1,000 or more, floating in warm waters throughout the world's oceans.
“They have no independent means of propulsion and either drift on the currents or catch the wind with their pneumatophores. To avoid threats on the surface, they can deflate their air bags and briefly submerge,” National Geographic outlined.