Over the last 12 months, we've seen deep sea expeditions highlight such bizarre and beautiful creatures as the "googly-eyed" stubby squid, a glowing UFO jellyfish, a bizarre purple orb and now, the hypnotic feather star.

Perhaps you've seen these gorgeous feathery marine animals, scientifically known as crinoids, before — but for much of the internet, this living underwater plumage was unknown until the video below went viral this week. Skip to 1:29 in the video to see the crinoid.

Composed of some 550 different species, most crinoids have five arms covered in a multitude of feathery fringes. Each of those arms works to generate a current that pushes food towards the mouth. They're commonly found on rocky bottoms in shallow water, but have also been discovered at depths approaching 30,000 feet.

Needless to say, they're absolutely beautiful animals.

feather star A feather star clinging to a coral reef in Indonesia. (Photo: Ethan Daniels/Shutterstock)

feather star Feather stars, also known as crinoids, have arms lines by smaller feather-like appendages called pinnules. (Photo: magnusdeepbelow/Shutterstock)

feather star Feather stars have been found at depths close to 30,000 feet. (Photo: Jung Hsuan/Shutterstock)

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Beautiful feather stars bring back the '70s
Strange alien-like marine animals called feather star or crinoids have five arms covered in feathery fringes.