Coconut water is the endosperm part of the coconut plant. Endosperm is the most common nutritive tissue for the development of embryos in Angiosperms and develops as post-fertilization structure from the primary endosperm nucleus. The coconut endosperm is a nuclear type. In very young coconut fruit the endosperm is found as a clear fluid in which float numerous nuclei of various sizes. This fluid is compactly filling the embryo sac in which the embryo is developing.