Not sure where you mean by "Polar", because caves are on land, not ice, so that's the North Pole out.
There may be caves in Antarctica - I don't know - but the chances of anything beyond some sort of microbial life in them are pretty slim!
There are caves in Greenland, I believe, butI don't think much study has been done of their resident fauna, if they have any. You could try internet-searching under something like "cave Biology in Greenalnd" see what happens. You could also try to see if any biological studies have been carried out in Castleguard Cave (Canada).
caves
They lived mostly in caves.
bannas
caves or tents
no where they lived in caves
longhouses, huts, teepees, wigwams, and caves.
None, which is partly why polar bears are carnivores.
Animals which live in caves for all or much of their lives include blind fish, a type of arachnid called a harvestman, and crickets. Animals which live in caves seasonally or temporarily, or which shelter in caves include bats, snakes, lizards, bears, mice, rats, and humans.
Polar region
cold ground
Type your answer here... no
they live in a cold environment