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  1. Plankton | Definition, Characteristics, Types, Diet, Size ...

    Plankton, marine and freshwater organisms that, because they are nonmotile or too small or weak to swim against the current, exist in a drifting state. Plankton is the productive base of both …

  2. Plankton - Wikipedia

    Plankton are organisms that drift in water (or air) but are unable to actively propel themselves against currents (or wind). [1][2] Marine plankton include drifting organisms that inhabit the …

  3. Plankton - National Geographic Society

    Oct 19, 2023 · The microscopic plants and animals of the plankton family are the foundation of freshwater and seawater food pyramids.

  4. What Is Plankton? Definition and Examples - Science Notes and ...

    Mar 29, 2023 · Learn what plankton is. Get the definition and examples of different types of plankton and discover their ecological importance.

  5. What is plankton and why is it so important? - KS2 ... - BBC

    Learn all about plankton and why it is important with Bitesize KS2 Sustainability.

  6. Plankton, explained - National Geographic

    Plankton, found in lakes, oceans, steams, and rivers, are the lungs of the planet.

  7. PLANKTON Definition & Meaning - Merriam-Webster

    The meaning of PLANKTON is the passively floating or weakly swimming usually minute organisms (such as dinoflagellates, diatoms, copepods, radiolarians, and larval crustaceans …

  8. Are Plankton an Animal or a Plant? - MedicineNet

    Plankton are microscopic organisms that play an important role in the marine ecosystem. They are food for shelled animals and fish. Plankton refers to both plant- and animal-like beings that …

  9. 5 Types of Plankton in the Ocean to Know - American Oceans

    Plankton, encompassing the tiny plants and animals floating in our oceans, form the foundation of marine life, constituting a staggering 90% of marine

  10. What Do Plankton Eat? Their Diet Explained - A-Z Animals

    Nov 3, 2025 · Plankton are the foundation of the food chain at sea. Small creatures survive by feeding on them, but what do plankton eat?