The mighty man o’ war While it may look like a jellyfish, the Portuguese man o' war (Physalia physalis) is actually a colonial organism, meaning that it’s made up of multiple specialised animals coming together to form one cooperative entity. | BBC Earth

The Portuguese man o' war (Physalia physalis) is not a true jellyfish but a siphonophore. So while it may appear to be an individual organism, it’s actually a colonial hydrozoan. #ocean #sealife | Science Channel