I was surfing off of Bondi in Sydney and had a Portuguese man of war (Commonly called a "Blue Bottle" in Australia) tentacle get wrapped around my arm. ... I've heard that if you are really tangled up, Ammonia can be used to cause the unfired nematocysts to fire so it doesn't make it worse when you try and remove them. read more
No. It's a jelly fish that lives in deep, cool waters. A lionfish lives in shallow coral reefs. read more
The Atlantic Portuguese man o' war (Physalia physalis), also known as the man-of-war, is a marine hydrozoan of the family Physaliidae found in the Atlantic, Indian and Pacific Oceans. Its venomous long tentacles deliver a painful sting, which is venomous and powerful enough to kill fish or (rarely) humans. read more