Who was the first person to sail in all the seven seas?

The term "seven seas" has historically referred to various bodies of water, making it difficult to attribute the achievement of sailing all of them to a specific individual. However, the first recorded person to circumnavigate the globe, which can be seen as a similar accomplishment, was Ferdinand Magellan, whose expedition completed this journey in 1519-1522. While many explorers have sailed extensively across various seas, the concept of "sailing all seven seas" remains more symbolic than factual.