'Headless chicken monster' caught on camera off East Antarctica

In the deep, dark Southern Ocean encircling Antarctica lies a creature so bewildering and elusive, it hasn't been filmed for a year. 
Behold, the 'headless chicken monster,' which has been filmed casually swimming near East Antarctica, the first time it's been filmed in the region. 
Except that it's not headless, a chicken, or a monster. It's a sea cucumber.
SEE ALSO: So, turns out snakes have been hitchhiking on planes. Have a nice flight.
Deep-sea resident Enypniastes eximia, also kn