 A Portuguese account of the same voyage suggests that the Chamorro people who greeted the travellers did so "without any shyness as if they were good acquaintances", raising the possibility that earlier unrecorded contact had occurred.Further contact was made during the sixteenth century, although often initial encounters were very brief.Documents relating to the 1525 voyage of Diogo da Rocha suggest that he made the first European contact with inhabitants of the Caroline Islands, possibly staying on the Ulithi atoll for four months and encountering Yap.