In March 2016 archaeologists working off Al Hallaniyah Island identified a shipwreck believed to be that of the "Esmeralda" from Vasco da Gama's 1502–1503 fleet. The wreck was initially discovered in 1998. Later underwater excavations took place between 2013 and 2015 through a partnership between the Oman Ministry of Heritage and Culture and Blue Water Recoveries Ltd., a shipwreck recovery company. The vessel was identified through such artifacts as a "Portuguese coin minted for trade with India (one of only two coins of this type known to exist) and stone cannonballs engraved with what appear to be the initials of Vincente Sodré, da Gama's maternal uncle and the commander of the "Esmeralda"."