Ask A Biologist - Plankton

Did you know that plankton are the most abundant organisms on Earth? These tiny creatures come in all sorts of shapes and sizes but are often
too small to see without the help of a microscope. To learn more about plankton, visit http://askabiologist.asu.edu/explore/invisible-watery-world.
Ask A Biologist coloring page | Web address: askabiologist.asu.edu/activities/coloring
Plankton Key
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1. Daphnia
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2. Strobilidium ciliate
3. Clione limacina pteropod
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4. Alexandrium dinoflagellate
5. Actinomma radiolarian
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6. Chaetognatha arrow worm
7. Copepod
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8. Pennate diatoms
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9. Hedbergella foraminiferan
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10. Platynereis polychaete worm
11. Dinophysis dinoflagellate
12. Campylodiscus diatom
13. Ceratium dinoflagellate
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12
14. Epiplocylis undella tintinnid ciliate
Phytoplankton
15. Euchlanis rotifer
Zooplankton
16. Cyclotella centric diatom
Symbiotic*
17. Emiliania huxleyi coccolithophorid
18. Foraminiferan
19. Chaetoceros diatom chain
20. Gambierdiscus australes dinoflagellate
Plankton are not to scale.
*These zooplankton can have phytoplankton living inside their bodies.
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