What are the functions of an whale ulna?

The ulna in whales, like in other mammals, serves as a bone in the forelimb, contributing to the structure and function of the flipper. It provides attachment points for muscles that facilitate movement and steering in the water. Additionally, the ulna helps support the overall shape of the flipper, enabling efficient swimming and maneuverability. In baleen whales, the ulna is often reduced in size due to their adaptation to aquatic life.