 It is currently closed to the public and is under the protection of the Secretariat of the Navy.The island received its name when it was charted by the expedition in 1518 under Juan de Grijalva, the first Spanish expedition to reconnoitre this section of the Gulf Coast.According to the account of Bernal Díaz, a member of the expedition whose "Historia verdadera de la conquista de la Nueva España" famously recalls the exploits of the "conquistadores" on this and the succeeding venture led by Hernán Cortés, after landing on the island