Deadly Portuguese Man-O'-War Washes Up on Popular Phuket Beaches

Tourists in Phuket, southern Thailand, have been warned after dozens of Portuguese man-of-war washed ashore on several popular beaches, including Nai Harn, Kata Noi and Kata. The alert was issued because the marine creatures are highly venomous and can cause severe injury, and in rare cases, death.

Phuket lifeguards said the creatures were found on beaches that are especially popular with Israeli travelers. Authorities warned the public not to touch them even if they appear dead or dried out on the sand, because their long tentacles can still inject venom after the animal has been stranded.

Although many people mistake them for jellyfish, the Portuguese man-of-war are different marine organisms with a transparent blue-purple floating bladder and long venomous tentacles. Their venom can cause intense pain, a strong burning sensation, swelling and severe allergic reactions. In some cases, it can also affect the nervous system and heart activity.

Deaths are described as very rare, but Thai authorities say people with allergies or medical sensitivities are at higher risk. The creatures are common in tropical oceans and are sometimes carried to shore by strong winds and currents. Local officials urged swimmers to follow lifeguard instructions, avoid any unknown marine life on the shoreline, and seek immediate medical attention if stung or exposed. The warning comes at the height of Thailand’s tourist season, when thousands of Israelis are expected to visit Phuket’s beaches in the coming summer months.