The Portuguese man-of-war is a siphonophore, an animal made up of ... in venom-filled nematocysts used to paralyze and kill fish and other small creatures. For humans, a man-of-war sting is ...

The blobfish, described as the world's ugliest animal, has been voted fish of the year in New Zealand. The creature, which grows to about 12 inches (30cm) long, is known affectionately as Mr ...