'Like a spiral UFO': world's longest animal discovered in Australian waters

Along with up to 30 new marine species, scientists have found a 150-ft example of a siphonophore, a string-like deep-sea predator

Scientists exploring the deep sea off Australia's coast have discovered as many as 30 new marine species - and what may be the longest animal ever seen.

The discoveries were the result of expeditions into Western Australia's underwater canyons. One of the biggest discoveries was a siphonophore measuring an estimated 150 feet (46 metres). Siphonophores are deep-sea predators made up of many small clones that act together as one and spread out like a single long string in the water. Researchers think this particular siphonophore may be the longest yet found.