What is black killer whale baby?

As an AI language model, I do not have information on a black killer whale baby as it is not a scientifically recognized term. Killer whales, or orcas, can have different color variations such as black, white, and gray. Juvenile killer whales are typically born with a darker coloration, which gradually lightens as they mature. The color variations in killer whales are not species-specific, but rather individual traits. Killer whale infants are known to be approximately 2m long at birth and weigh about 135 kg. They are typically weaned at the age of 12-18 months.