D'Entrecasteaux Islands (däNtrəkästōˈ) [key], volcanic group, SW Pacific, SE of New Guinea, part of Papua New Guinea. Comprising the Fergusson, Goodenough, and Normanby islands, the group, with a total land area of c.1,200 sq mi (3,110 sq km), is mountainous and has several extinct volcanoes, hot springs, and geysers. Coconuts and pearl shells are the chief products. The islands were named for the French navigator J. A. B. d'Entrecasteaux.