But to capture prey — as some of us find out the hard way — jellyfish have a net of tentacles that contain venomous, stinging ...

A Portuguese man o’ war is actually a siphonophore, which is a collection or colony of individual organisms. Siphonophores are closely related to jellyfish, but they aren’t the same.

A Portuguese man o’ war is actually a siphonophore, which is a collection or colony of individual organisms. Siphonophores are closely related to jellyfish, but they aren’t the same.