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Possible sightings of Portuguese man-of-war

A photograph of a Portuguese man-of-war claimed to have been taken at Ċirkewwa in March and sent to Bicref.

A photograph of a Portuguese man-of-war claimed to have been taken at Ċirkewwa in March and sent to Bicref.

Unconfirmed sightings of the jellyfish-like Portuguese man-of-war, known for its excruciating sting, are trickling in as bathers claim to have come across the floating invertebrate near Maltese beaches.

The authorities, however, have nothing more to go by than people's reports and the odd inconclusive photograph.

The Health Ministry has been informed about a sighting near Għar Lapsi, adding this "could not be confirmed," a spokesman said.

The Biological Conservation Research Foundation (Bicref) received five reports and two photographs, said Adriana Vella, marine conservation biologist and the founder of Bicref.

While the photos sent were of the man-of-war, the foundation could not confirm the exact location. The people who sent in the photographs claim they were taken in February and March at Golden Bay and Ċirkewwa.

Technically called physalia physalis, the man-of-war is not actually a jellyfish but a colony of different kinds of organisms, including polyps, living together.

Until last week no formal reports had been made but, whether confirmed or not, they are slowly coming in. On receiving reports, Bicref forwards the details to the health authorities.

If it turned out these reports were founded, could the species start a colony in Maltese waters? "As this species is confirmed to usually also inhabit the Mediterranean, what is new is that it seems to be increasing in abundance. Coming months and years will show to what extent this may lead to their presence in our waters on a regular basis unless biological conditions will not keep them under check," Dr Vella said.

She said that various scientists believed the presence of jellyfish and similar species was growing as seas were losing their typical biodiversity due to overfishing, pollution and global warming.

"While blooms of these organisms have been occurring naturally in the past, there is concern that the increasing persistence of such blooms may have a marked impact on marine life," she said.

According to the Mediterranean fishing website medfish.com, the man-of-war has ventured into waters normally considered too warm for it.

Although, until recently, there were no reported sightings in Malta, there were at least some sightings off the southern coasts of Spain in April while another sighting was recorded closer to home in the south east of Sicily last February.

According to the National Geographic, the man-of-war comprises four separate polyps. It gets its name from the uppermost polyp - a gas-filled bladder which sits above the water and somewhat resembles an old warship at full sail.

Also known as bluebottle, the species has no independent means of propulsion and either drifts on the currents or catches the wind.

Anyone who comes across anything different to the normal jellyfish is urged to inform the health authorities or Bicref (www.bicref.org).

Treating the sting

The tentacles of the man-of-war can extend up to 50 metres in length below the surface of the sea and contain venom used to paralyse and kill fish and other small creatures.

For humans, a man-of-war sting is excruciatingly painful but rarely deadly. Even dead man-of-wars washed up on shore can sting.

If stung, rinse the area gently with seawater or fresh water to remove any tentacles stuck to the skin. Do not apply vinegar as this can make the sting burn more. Put an ice pack to slow the venom from spreading.

If symptoms persist, and you have difficulty breathing, dizziness, nausea, or stomach cramps, seek medical attention immediately.

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