The first known Europeans to sight New Guinea were probably the Portuguese and Spanish navigators sailing in the South Pacific in the early part of the 16th century. In 1526–1527 the Portuguese explorer Jorge de Menezes accidentally came upon the principal island and is credited with naming it "Papua", after a Malay word for the frizzled quality of Melanesian people's hair. The Spaniard Yñigo Ortiz de Retez applied the term "New Guinea" to the island in 1545 because of a perceived resemblance between the islands' inhabitants and those found on the African Guinea coast.