If sharks can have a week of their own, why not jellyfish — especially the hyper-venomous box jellyfish? Most jellyfish are ...

The infamous box jellyfish developed its frighteningly powerful venom to instantly stun or kill prey, like fish and shrimp, so their struggle to escape wouldn’t damage its delicate tentacles.

It's almost square and has multiple layers, which make it look as though it is constructed out of boxes stacked on top of one ...

A box jellyfish advisory has been issued for Waikiki and Ala Moana beaches, in whose waters the stinging invertebrates have ...

The biggest here is 1.7 inches across. Biggest in photo is just over 3 inches across. In recent decades jellyfish populations in some parts of the world have boomed. In the 1980s a comb jelly that ...