Nothing ruins a nice seaside swim than someone shouting about something swimming in the crystal clear waters, right next to you. While most people might mistakenly call a Portuguese man o' war a ...

The striking YouTube footage of a Portuguese Man o’ War was captured on a beach at Olivenca, Bahia, in Brazil. The stunning clip includes some close-up shots of this unique creature.

While bluebottles are highly poisonous, understanding Portuguese Man O’ War biodiversity helps protect beachgoers and surfers ...

The Portuguese Man o’ War is distinctive because of its balloon-like float, which rises out of the water and is used like a sail against the wind to move the creature.

While certain jellyfish are more common, sometimes a stray shows up. For example, recently lion’s mane jellyfish, which pack ...

Legions of Portuguese man o’ war can travel in groups of up to 1,000. Their 30-metre-long tentacles are deadly to prey like small fish and shrimp.

The Portuguese man o’ war are typically reported in New York’s marine waters “when water temperatures are at their peak,” according to the state Department of Environmental Conservation.

Read full article: The Portuguese Man o’ War: What are they and why you should avoid them If you have spent any time at the beaches on the Texas Gulf Coast, chances are you have seen jellyfish ...

Portuguese man o' war, often mistaken for jellyfish, have been sighted on Florida beaches. While rarely fatal to humans, the sting can be intense and should be treated with hot compresses, not ...

Larson added that as the Portuguese man o war follows wind and surface currents, they aggregate into blooms or large clusters. Common in Florida during the colder months, those washed upon shores ...

The Portuguese man o' war is often thought of as a type of jellyfish, but it is actually a species of siphonophore — a group of marine organisms that are closely related to jellyfish.