Unknown Sea Cucumber
This particular sea cucumber was seen near the seafloor at Slope Base, “swimming” in the water column at a depth of 2897 m, just above the seafloor. It looked purplish-brown from a distance, and closer it looked purplish-pink. It had a flap of skin near its “head” that undulated in the water. This species was also spotted by Neptune Canada near the seafloor at a depth of 2659 m, who created an entry about it in the Marine Life Field Guide, but were unable to properly name it.
Reference:
Marine Life Field Guide (Neptune Canada)