Britannica AI Icon
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

Coco de mer

plant
Also known as: Lodoicea maldivica, double coconut
Taxonomy

IUCN status: Endangered

Coco de mer, (Lodoicea maldivica), endangered palm of the Seychelles Islands in the Indian Ocean, the seed of which is the largest and heaviest on Earth. Its contents of the nut are edible but are not commercially valuable. Water vessels and platters are made from the shells. The empty fruits (after germination of the seed) are found floating in the Indian Ocean and were known long before the palm was named by science.

The flowers are borne in enormous fleshy spadices (spikes), the male and female on distinct plants. Coco de mer fruits take about 10 years to ripen; they have a fleshy and fibrous envelope surrounding a hard, nutlike seed that is generally two-lobed, suggesting a double coconut. The seed is the largest in the world.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Melissa Petruzzello.