There have been reports of these dangerous jellyfish washed up on beaches further south this week but our pals at Jalon Valley News have just sent this warning issued closer to home, in Benissa today….
“Benissa town hall are warning that Portuguese man of war jellyfish have appeared on local beaches. Do not touch them, they are extremely dangerous and their sting is excruciatingly painful.
Mind your pets as well please.”
The stinging, venom-filled nematocysts in the tentacles of the Portuguese man o’ war can paralyze small fish and other prey. Detached tentacles and dead specimens (including those that wash up on shore) can sting just as painfully as the live organism in the water and may remain potent for hours or even days after the death of the organism or the detachment of the tentacle.
Stings usually cause severe pain to humans, leaving whip-like, red welts on the skin that normally last two or three days after the initial sting, though the pain should subside after about 1 to 3 hours (depending on the biology of the person stung). However, the venom can travel to the lymph nodes and may cause symptoms that mimic an allergic reaction including swelling of the larynx, airway blockage, cardiac distress, and an inability to breathe (though this is not due to a true allergy, which is defined by serum IgE). Other symptoms can include fever and shock, and in some extreme cases, even death, although this is extremely rare. Medical attention for those exposed to large numbers of tentacles may become necessary to relieve pain or open airways if the pain becomes excruciating or lasts for more than three hours, or breathing becomes difficult. Instances where the stings completely surround the trunk of a young child are among those that have the potential to be fatal.