Sea coconut is a common soup in summer. It has the functions of nourishing yin and moistening the lungs, removing dryness and clearing away heat, moistening the lungs and relieving cough. Sea coconut does not grow on the sea floor, but is a palm plant. Sea coconut is commercially divided into African sea coconut and Thai sea coconut according to the place of origin. Only the latter is available on the market. Because sea coconut is an exotic species, there is almost no information about it in traditional Chinese herbal medicine literature, and there is no trace of it in the "Compendium of Materia Medica". Another theory about the origin of the name of sea coconut is that before the Seychelles Islands were discovered, someone in Southeast Asia picked up a large coconut on the beach and thought it was a plant fruit from the bottom of the sea. In addition, it has many similarities with local coconuts. The same, so it is called submarine coconut.

Compared with the Thai sea coconut and the African sea coconut, in addition to the obvious difference in appearance, their efficacy is of course very different from the genuine product, or even different, so the price is also very different. There are reports that in In Hong Kong, the former sells for about HKD 200 per catty, while the African sea coconut sells for nearly HKD 500 per catty. The sea coconut on the market is generally priced at 18 yuan per catty, both dry and wet.