Background Rapa Nui (Easter Island = Isla de Pasqua) is of volcanic origin. best known for about 900 man-made stone statues known as moai. It is one of the most isolated inhabited islands on Earth and studies on the diatoms of Rapa Nui are very few. Methods Light (LM) and electron microscopic (SEM) observations of a single sample collected from Rapa Nui are presented. https://foldlyers.shop/product-category/headers-idc/