Ningen.

excerpt from chapter seven (?), The Ningen

Ningen are the only cryptid in Antarctica. They’re pale, white like the ice in the ocean where they live. They hve finned hands, and no other facial features than eyes and mouths. Some claim they have legs, others that they have a whale-like tail.
They’re usually seen at night, from a boat. There are almost no photographs of them, and very few reports of sightings. However for the area in which they live, there are few people and fewer still looking into the waves.
The first sightings were during the 1990s, as more people were working in the antarctic. They’re massive creatures, between 60 and 90 feet long. Most claim they have hands, like human hands, with five fingers.
No ningen has yet been captured, dead or alive.