Why is Coco de Mer illegal?

Could you elaborate on why Coco de Mer is considered illegal? Is it due to its rarity, potential misuse, or perhaps its connection to illicit activities? I'm curious to understand the legal implications surrounding this particular item and how it's classified as unlawful in certain jurisdictions. Is there a specific legislation that governs its status, or is it more of a societal stigma attached to it? Additionally, are there any efforts being made to legalize Coco de Mer or challenge its current illegal status?