Diatoms
Assorted diatoms as seen through a microscope. These specimens were living between crystals of annual sea ice in McMurdo Sound, Antarctica. Image digitized from original 35mm Ektachrome slide. These tiny phytoplankton are encased within a silicate cell wall.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Diatoms through the microscope."
http://en.wikipedia.org/wiki/File:Diatoms_through_the_microscope.jpg
Wikipedia
Public domain.
