What are some examples of nanoplankton?

Nanoplankton includes tiny planktonic organisms, typically ranging from 2 to 20 micrometers in size. Examples include certain species of phytoplankton, such as coccolithophores and dinoflagellates, as well as small protozoans like ciliates. These microorganisms play crucial roles in aquatic ecosystems, contributing to primary production and serving as a food source for larger planktonic and benthic organisms.