Is it true that in 1513 Balboa discovered an ocean he named the pacific ocean?

Vasco Núñez de Balboa was a Spanish explorer, governor, and conquistador. He is best known for being the first European to see the Pacific Ocean from the New World. In 1513, Balboa crossed the Isthmus of Panama and became the first European to see the Pacific Ocean, which he named Mar del Sur ("South Sea").