Petrel Island () is a rocky island, 0.5 nautical miles (0.9 km) long and 45 m in elevation, which lies northwest of Rostand Island and is the largest feature in the cluster of islands at the southeast end of Geologie Archipelago. Photographed from the air by U.S. Navy Operation Highjump, 1946-47. Charted by the French Antarctic Expedition, 1949-51, and so named by them because numerous snow petrel nests were found there. In January 1952, following destruction of the Port Martin base by fire, the French Antarctic Expedition under Marret, 1952-53, enlarged the hut on Petrel Island to serve as the new base site.
This article incorporates public domain material from the United States Geological Survey document "Petrel Island (Antarctica)" (content from the Geographic Names Information System).