Black Beluga Whale

The black beluga whale is a species of beluga whale native to warm to cool oceans around the world, except the Arctic and Antarctic oceans, where it is too cold for black beluga whales to live with, not to mention the white beluga whales being present in the Arctic oceans. They are about the size of a white beluga whales and look very much like white beluga whales, except that they are either grey or black instead of white, and they also have less blubber due to living in warm and cool waters rather than cold and freezing waters. They mainly feed on jellyfishes, worms, crustaceans, cephalopods, and fish. They are immune to the effects of human activities, unlike most other species of cetaceans, so pollutions do not effect this whale species and this species can still thrive even in acidic oceans, much like jellyfishes. They also flourish very well in captivities unlike most other whale species, and there hasn't been a record of any kind of a black beluga whale attacking and killing any sapient species/beings nor dylanuses, so this whale species make good and cheap animals in aquariums of all kinds and is legal to keep. It is also a very common aquarium pet in many of the modified pools made by sapient species/beings.