Yes, there are indeed bears that have been seen swimming and playing in pools, sometimes even in people's backyard pools. These bears, often black bears, have been documented taking naps, playing with pool floaties, and sometimes bringing their cubs to swim with them. This phenomenon has been popularized on social media with some bears even gaining followings under names like "the pool bear" or "Maddie bear," who is known for regularly visiting pools for swimming and relaxation. So, while there isn't a distinct species called "pool bear," bears can and do swim and enjoy pools in certain areas.

Additionally, the term "polar bear" describes a species of bear that is adapted to aquatic life in the Arctic, being excellent swimmers and often found on sea ice and in the water hunting seals. But the common "pool bear" seen in backyards is typically a black bear engaging with human environments.