Do fin whales have elbow joints?

Yes, fin whales do have elbow joints, as they are mammals and share similar skeletal structures with other mammals. Their flippers, which are modified forelimbs, contain bones that include a humerus, radius, and ulna, allowing for the flexibility and movement associated with elbow joints. However, the functionality of their elbow joints is quite different from that of terrestrial mammals, as fin whales use their flippers primarily for steering rather than for locomotion.