Describe the health of the average great white. How does this compare to the juvenile shark that attacked in 1916?

The great white can grow to twenty feet or more and weigh several tons. It lives a long life, free of cancer, infections and other disease. Its wounds heal remarkably fast. Yet the juvenile shark that attacked the men nay have sensed that it wouldn't survive in the open ocean; and, therefore, turned toward the coast when it reached Sandy Hook Bay on its northward migration. It would eventually experience weakness and sluggishness due to lack of nourishment.