Barrel jellyfish, like the one the man attempts to pick up in this video, aren’t deadly, but they can still sting. Their stings are usually mild; some people feel nothing, while others ...

The infamous box jellyfish developed its frighteningly powerful ... or die of heart failure before even reaching shore. Survivors can experience considerable pain for weeks and often have ...

Portuguese man o’ war have been spotted on Spanish beaches, forcing the temporary closure of some popular shorelines last year ...