A. Decreased numbers of whales occurred from hunting in the 1800s and early 1900s. These are not large numbers, and there is some concern about the low calving rates and continued mortality from ship collisions.
Boaters can keep lookouts in known whale feeding and breeding grounds, and keep their speeds low.
We can support whale research programs and environmental protection programs. Remember, once a species is gone, it is gone for good. He reports that we don't really understand how the whales navigate from their northern feeding areas to their southern calving grounds. They may use the stars in an innately understood process, or they may have to learn parts of the migration from their mothers. We really have no idea at this time.