I sent the photos to a biologist in head office I know and they were identified as nephtyid polychaete. They are predatory worms that roam the seabed preying on other small invertebrates. They are quite large for a polychaete worm and fairly common, circum-antarctic. There are several species, but you need a microscope to tell them apart.
Later I made up another sixty meters of cable for my underwater camera making eighty meters in total. When there is more light and on a fine day I plan on drilling a hole through the nearly two metre sea ice and lowering the camera to the sea bed to film the sea life below to make a time laps movie.
On the way back to the red shed I stopped in at the green store and had a relaxing spa for an hour while reading my book. I heated up a bowl of soup for dinner and latter worked on my blog all night that I have let go for several weeks.
Nephtyid polychaete stuck to the underside of an overturned ice berg
Ice fall in West bay