Note: Do not rely on this information. It is very old.
Cocodemer
Coco-de-mer, or Double Cocoa-nut, the remarkable fruit of Lodoicea sechellarum, a palm restricted to the islands of Praslin and Curieuse in the Seychelles. The fruit was known as flotsam in the Maldive Islands, before the discovery in 1734 of the Seychelles, and was supposed to be of marine origin. It contains one, two or three bi-lobed nuts, with hard black shells like double cocoa-nuts, and weighs about 40 lbs.