You searched for: “zooplankton
zooplankton (noun) (singular and plural)
1. Floating animal organisms collectively: "Tiny animals, or zooplankton, consist of rotifers, copepods, and krill or microorganisms once classified as animals; such as, dinoflagellates and other protozoans."
2. A small animal organism present in natural waters: "The majority of zooplankton are small crustaceans (copepods, krill), arrowworms, and gelatinous creatures that feed primarily on phytoplankton."
3. Microscopic animals that move passively in aquatic ecosystems; such as, protozoans: "To the zooplankton belong the protozoa, the sea anemones, the corals, and the incredibly shaped jellyfishes."
4. Microscopic drifting animal life much of which lives on or near the surface of water but some are at greater depths: "The zoologist was studying the nutritional requirements and efficiencies of food conversion of marine animals (zooplankters) feeding on marine phytoplankters or on other small animals."
Word Entries at Get Words: “zooplankton
zooplankton
Planktonic organisms belonging to the animal kingdom.

The majority are small crustaceans (copepods, krill), arrowworms, and gelatinous creatures that feed primarily on phytoplankton.

This entry is located in the following unit: Ocean and Deep Sea Terms (page 6)