Green coconut.......

the fruit, which, botanically, is a drupe, not a nut. The spelling cocoanut is an archaic form of the word.[2] The term is derived from the 16th-century Portuguese and Spanish .......

They form a regular part of the diets of many people in the tropics and subtropics. Coconuts are distinct from other fruits for their endosperm containing a large quantity of water[4] (also called "milk"),[5] and when immature, may be harvested for the potable coconut water. When mature, they can be used as seed nuts or processed for oil, charcoal from the hard

which makes colonizing shorelines of the tropics relatively straightforward.[47] Coconuts also need high humidity (at least 70–80%) for optimum growth, which is why they are rarely seen in areas with low humidity