What are the eight major groups of zooplankton?

The eight major groups of zooplankton include copepods, krill, jellyfish (medusae), rotifers, cladocerans, foraminifera, ciliates, and larval stages of various marine organisms (such as fish and mollusks). Copepods and krill are particularly abundant and play crucial roles in aquatic food webs. These groups exhibit diverse feeding strategies and adaptations, allowing them to thrive in various aquatic environments. Together, they contribute significantly to the marine ecosystem's dynamics and nutrient cycling.