ACS Distance Education UK
Zooplankton are microscopic animals that eat other plankton. Some zooplankton are larval or very immature stages of larger animals, including molluscs (like snails and squid), crustaceans (like crabs and lobsters), fish, jellyfish, sea cucumbers, and seastars (these are called meroplankton).
Other zooplankton are single-celled animals, like foraminifera and radiolarians.
Other zooplankton are tiny crustaceans, like Daphnia. Megaplankton includes the larger organisms such as jellyfish. There are numerous types of organisms that are considered zooplankton, below are some examples: