'Otherworldly' Portuguese man o' war becoming more common on Nova Scotia's inshore
With a little help from the warming Gulf Stream, Nova Scotia beachgoers are encountering a strangecreature with a balloon-like body whose sting packs a higher punch than that of jellyfish.
Last week, a Portuguese man o' war appeared at a surfing hot spot on Lawrencetown Beach in Dartmouth, N.S. The animal, a species of siphonophore -- closely related to jellyfish -- has a transparent, inflated sail often adorned with purple, blue or pink markings. It drifts through the water, propelled by currents and wind.
Although there are no concrete numbers on how often the Portuguese man o' war is spotted in Nova Scotia, Sandra Johnston, with the province's Natural Resources Department, said sightings have become more common along east and south shore beaches since 2020.
"(Getting stung) is quite a painful sting. It is just like a jellyfish sting but significantly stronger that lasts around 20 minutes," Johnston said in an interview.
Boris Worm, a biology professor at Dalhousie University in Halifax who studies marine conservation and biodiversity, called the subtropic creature "absolutely fascinating and otherworldly."
Worm said the rise in Portuguese man o' war sightings in Nova Scotia is likely because the Gulf Stream -- a channel of warm water that flows up the eastern coast of North America -- has become stronger in the northwest Atlantic Ocean and has warmed the south shore of Nova Scotia faster than it has other parts of the ocean.
Fish are seen swimming underneath a Portuguese man o' war in this 2011 file photo. (AP Photo/Gerald Herbert)
The Portuguese man o' war live in subtropical gyres -- revolving masses of water that have become home to lots of different organisms. As the Gulf Stream's influence gets stronger, tropical and subtropical creatures are being transported further away, all the way to Nova Scotia's inshore.
While other jellyfish-related species tend to live in deeper water, the Portuguese man o' war drifts closer to the surface. Its tentacles usually extend a few metres behind it -- in extreme cases they can be as long as 30 metres -- and Worm said their length increases the risk of contact with swimmers.
"You could swim without ever seeing the sail or the organisms that could be some 10, 20 or 50 feet away, but the tentacles might still drift behind and sting you," Worm said.
Other tropical fish making appearances in Nova Scotia from warming waters include butterfly fish, trigger fish and sea horses.
Neither Nova Scotia Parks nor the Nova Scotia Lifeguard Society tracks Portuguese man o' war sightings; Nova Scotia Parks said it issues advisories online and on-site when the creature is spotted. Nova Scotia Health says hospital visits aren't tracked by cause, so there's no way to know how many people seek care for Portuguese man o' war stings each year.
Atlantic Canada Poison Centre's Jill Duncan said the low likelihood of serious injury from these stings further obscures how many people are stung each year. "The most common thing that happens when you get stung is pain and red welts in the area that you're stung," Duncan said in an interview.
"It's uncommon to go into a hospital and even (more) uncommon for there to be serious effects and death."
Contrary to the "old wives tales" that urine is an effective antidote to a jellyfish sting, Duncan said, the best treatment after contact with a Portuguese man o' war is to rinse the wound with salt water and submerge it in warm water afterward.
This report by The Canadian Press was first published July 8, 2024.
For more Nova Scotia news visit our dedicated provincial page.
CTVNews.ca Top Stories
Tropical Storm Milton could hit Florida as a major hurricane midweek
People across Florida were given notice Sunday that Milton, for now just a tropical storm off the coast of Mexico, could intensify rapidly into a major hurricane before slamming midweek into the storm-ravaged Gulf Coast.
Looking for cheap flights for the holidays? Here are some tips to remember
Travelling on a budget can be stressful, but there are ways you can ensure you're getting the best deal on flights as the holiday season approaches.
Officer arrested after allegedly stealing alcohol from store: TPS
A Toronto police officer has been arrested after allegedly stealing three bottles of alcohol from a store.
Son charged with mother's murder on Vancouver Island
Police on Vancouver Island have made an arrest in the case of a 78-year-old woman found dead in her home almost two years ago.
Trump ramps up his campaign in Wisconsin, where a Republican win could knock out Democrats
Donald Trump's fourth scheduled stop in eight days in Wisconsin is a sign of his increased attention as Republicans fret about the former president's ability to match the Democrats' enthusiasm and turnout machine.
Liberal, Conservative MPs to speak at Oct. 7 march to Parliament Hill
A Liberal MP and a Conservative MP will be part of a team delivering speeches at an event in Ottawa commemorating the one year anniversary of the attacks on Oct. 7.
Police ID mom, daughter killed in Old Montreal; video shows person break into building before fatal fire
Police released the identities of the mother and daughter who were killed after a fire tore through a 160-year-old building in Old Montreal on Friday.
'Sober curious': Younger Canadians turning away from alcohol, data says
According to a survey on recent alcohol consumption, younger Canadians are more likely to have not had a drink in the past week. For those interested in slowing or stopping their alcohol consumption, there's a phrase: 'sober curious.'
Three injured, including child, in rural south Ottawa crash
Three people were taken to hospital after a crash between a pickup truck and a car in a rural part of Ottawa's south end on Saturday afternoon.