The ice teuthopin split from its ancestor the cave teuthopin. Some slipskunik tunnels connected to Yannick Ice Caves and some cave teuthopin went into to explore. Over time the population was separated enough to become its own species. In these tunnels it discovered the helmethead uksip, slipskunik and even juvenile slender spotted limbless to eat.
They developed long slender bodies with thick fat to keep them warm. While they can still change colors they will stay blue and white to blend in with the ice. However when they get too cold they will come to the surface to sun themselves and will change to black to maximize heat absorption. Their larger size means they can also retain heat better. Most of their limbs and eye stalks have become short as well. Only their main clawed tentacles have remained longer in order to pull their bodies through the tunnels. The new claws also help in making tunnels bigger to slide through, however they usually just take over other tunnels rather than digging their own.
They no longer live in social groups and are solitary hunters. However they will use their vocal sacs to echo through the tunnels to attract a mate. Like their ancestors they can sense vibration through their skin, but they don't necessarily 'hear'. Once the 2 meet they will flash different coloration for courtship.
The ice teuthopin still reproduces in more or less the same way as its ancestors. The hermaphrodites fertilize each other's eggs, then place them in the pouch of a carrier. The young hatch inside the pouch, but are kept inside until they can survive outside. Even then they need much attention, being only a tenth of their parents' size. The couple work together in defending and feeding the babies, who will reach their full size in about half a year. After they are old enough they will go off on their own.