👉 In biogeography, a term used to describe an area with high densities of plankton. Plankton is a type of small organism that lives in the ocean and consists of single cells that are made up of chlorophyll and other pigments. This type of organism is characterized by its large size and complexity, which makes it difficult for researchers to study directly. In hypoplanktonic areas, this term refers to an area with a high density of plankton, but the density