Plankton Facts



  • Plankton are tiny floating organisms (living things) that are found in both the sea and ponds and lakes.
  • The word ‘plankton’ comes from a Greek word meaning ‘wandering’.
  • Plankton is a general term that includes every marine organism too small and weak to swim for itself.
  • The smallest algae are called plankton, but large floating algae (seaweeds) are not called plankton.
  • Plankton can be divided into phytoplankton, which are tiny plants, and zooplankton, which are tiny animals, but the division is blurred.
  • Most phytoplankton is very tiny indeed and so called nannoplankton and microplankton. Zooplankton is generally bigger and called macroplankton.
  • Green algae that give many ponds a bright green floating carpet are kinds of plankton.
  • Pliytoplankton get their energy by photosynthesis just like other plants.
  • Countless puffs of oxygen given out by plankton early in Earth’s history gave the air its vital oxygen.
  • Plankton is the basic food of all large ocean animals.