Polar bears are solitary animals, only spending time around other bears to mate or, for females, when they have cubs. The cubs are born while the mother is hibernating, and emerge from the den in the spring when she wakes up. They will stay with their mother for around 3 years, during which time she will teach them all they need to know to survive. These cubs couldn't have been very old, as they were very small, so I think they were only a few months old. Before I was able to get my camera out, we watched the mother teaching the cubs to swim.
Polar bears have a circumpolar distribution and are found throughout the Arctic
For me, this was a very special spotting. I never even dreamed we would come across polar bear cubs, so this was fantastic. They were only about 50m from our ship, the cubs were curious but mama bear was wary (you can see her looking over her shoulder constantly). I could have watched them for hours!