How long are the calves of killer whale in yellow colour?

Killer whale calves are typically not yellow; they are born with a grayish or black hue that may lighten as they mature. In some populations, particularly those in warmer waters, calves can exhibit lighter or even yellowish tones due to the presence of algae or other environmental factors. However, their coloration can vary significantly depending on their age and the specific ecological conditions they are in.