The term "Plankton" refers to a group of living beings that inhabit the waters, its most outstanding characteristic being that they can only be seen with microscopes. At the etymological level, the word comes from the Greek word “πλαγκτός”, which made the nature of these spectacular organisms clear, defining them as “wandering”. In addition to these, there are also other specimens that, in some way, come into contact with plankton, but have the peculiarity of inhabiting and behaving in a different way, such as being constantly in motion or living in an area much closer to the boundary with the air.
Plankton can be found in depths of 200m or more, however, it is not usually far from the areas where it has settled, because one of the peculiarities that makes it plankton is the continuous suspension in which they are found.. They are all very small and transparent, presenting somewhat bluish colors when analyzed under the microscope; however, there are some species that are on the surface and have colors between reddish and bluish, which can be appreciated without much effort. Some even show bioluminescence.
One of the classifications that are considered appropriate to organize these small beings is to divide them into zooplankton and phytoplankton; The former are distinguished by being an integrated group of consumers and producers, whose diversity and quantity varies according to the type of water they inhabit, something that it has in common with the last group, in which the majority are aquatic plants, they produce more than 50% of the oxygen that is in the earth's crust, they feed with the help of photosynthesis and are the food of zooplankton. Some intellectuals and scientists have opted to carry out a new division of the plankton, following characteristics such as its size or with respect to the remoteness of the area that they inhabit with the coast.
