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plankton
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phytoplankton
The essential role of phytoplankton in ecosystems
Observe diatoms, microscopic sea organisms encased in silicified cell walls with intricate designs
marine zooplankton
The role of copepods in the marine food chain
Observe permanent plankton, including transparent larvaceans, ciliate protozoans, and other zooplankton
plankton
Take an in-depth look at the variety of plankton, from diatoms and microflagellates to jellyfish
For Students
plankton summary
Quizzes
greylag. Flock of Greylag geese during their winter migration at Bosque del Apache National Refugee, New Mexico. greylag goose (Anser anser)
Biology Bonanza
Read Next
algae. Lake Erie. Dead fish in harmful algal bloom along the southeast Lake Erie shore of Pelee Island, Ontario, Canada, 5 miles north of the international line Aug. 19, 2011. Toxic algae blooms, drinking water, 4th largest of 5 Great Lakes
Harmful Algal Blooms
Discover
New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
Why Is It Called Black Friday?
Normandy Invasion: Omaha Beach. World War II. D-Day. Infographic. SPOTLIGHT VERSION
Facts and Figures About the Landings on Omaha Beach During the Normandy Invasion on June 6, 1944
An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
11 Egyptian Gods and Goddesses
Paul Revere. "The bloody massacre perpetrated in King Street Boston on March 5th 1770 by a party of the 29th Regt.," engraved by Paul Revere. Boston Massacre.
There’s a Riot Goin’ On: Riots in U.S. History (Part One)
African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.
Timeline of the American Civil Rights Movement
Demystified - Do Lemmings Really Commit Mass Suicide? illustration
Do Lemmings Really Commit Mass Suicide?
Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.
6 Lakes That Are Drying Up

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Photos and Videos

phytoplankton
marine zooplankton
plankton
The essential role of phytoplankton in ecosystems
Observe diatoms, microscopic sea organisms encased in silicified cell walls with intricate designs
The role of copepods in the marine food chain
Observe permanent plankton, including transparent larvaceans, ciliate protozoans, and other zooplankton
Take an in-depth look at the variety of plankton, from diatoms and microflagellates to jellyfish
See All Videos and Images →

Related Topics and References

Topics
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Key People

Christian Gottfried Ehrenberg
German biologist
Per Teodor Cleve
Swedish chemist
Viktor Hensen
German physiologist

Related Quizzes and Features

Quiz
greylag. Flock of Greylag geese during their winter migration at Bosque del Apache National Refugee, New Mexico. greylag goose (Anser anser)
Biology Bonanza