What a difference 6 years makes! When the North Gulf Oceanic Society snapped AD11’s last official ID photo in 2012, he was still a juvenile and was not distinguishable as a male or female.
Now he’s all grown up! Based on his size, AP11 is probably between 15-17 years old. Male killer whales go through a rapid period of growth called “sprouting” when they are about 12-13 years old. During this growth spurt, their dorsal fins increase in height, their pectoral flippers broaden, tail flukes start to curl, and they gain a huge amount of weight and bulk.
He still has some more growing to do and won’t be completely physically mature until he’s about 20.