Its thousands of species can be found in some oceans and lakes , as well as in corners of the earth such as mosses or tree bark.
With little capacity for movement, these members of plankton are mostly carried away by currents . Their essential utility is focused on fixing atmospheric carbon and producing oxygen, which is why they occupy a more important role in the ecosystems in which they inhabit than is thought.
In addition, they can act as bioindicators of the quality of the environment, particularly water, since they are adapted to very specific physical and chemical conditions. Regarding their structure, they are surrounded by a wall composed of silica , which is responsible in most cases for their beautiful appearance.





