The sailor said at first place couldn't believe what he had discovered and for some time he kept the secret for him self.
With is boat sonar, we has able to measure the size of the pyramid (you can watch it on the video), located about 40meters from the water surface, with an height of 60 meters and an base of 8000 square meters (aprox. 90x90 m).
He said also that the vertex of the pyramid was facing north and south, like Giza pyramids in Egypt.
At this time the coordinates of the discovery, were sent to Portuguese Ministry of Culture.