What Italian seaman was the first to realize the land Columbus discovered was a new continent?

The Italian seaman who first recognized that the land Columbus discovered was a new continent was Amerigo Vespucci. He participated in several voyages to the New World during the late 15th and early 16th centuries and concluded that the lands were part of a separate continent, distinct from Asia. His observations and subsequent letters about these discoveries led to the naming of the Americas after him.