What is the difference from meroplankton and holoplankton?

Meroplankton are organisms that spend only a part of their life cycle in the planktonic stage, typically as larvae, before settling into a benthic or nektonic lifestyle; examples include the larvae of crabs and fish. In contrast, holoplankton are organisms that remain planktonic for their entire lives, such as jellyfish and copepods. Essentially, the key difference lies in the duration of their planktonic existence, with meroplankton being temporary and holoplankton being permanent inhabitants of the plankton community.