Diatoms by Robert Berdan

seen from Brazil
seen from Iraq
seen from Yemen

seen from Australia
seen from Saudi Arabia
seen from Germany

seen from Maldives
seen from Estonia
seen from United States
seen from China
seen from United States
seen from China

seen from United States
seen from China
seen from Germany
seen from Malaysia
seen from United States
seen from Uzbekistan
seen from Peru

seen from United States
Diatoms by Robert Berdan
Cheek cell 400x, dark field
Looking back - Campylodiscus by C.M. Topping (Gregor T. Overney)
B&W image of Campylodiscus using dark-field illumination (objective 10x).
Allow me to pass Through your Window To the Golden Sun
Friend of mine wanted to know what a diatom bloom looked like, so here they are! They usually occur around January to early February. This one is from a fish tank.
(The bottom-left picture is dark-field microscopy, but the individual diatoms didn't show up too well.)
An amoeba under the microscope viewed with dark-field microscopy.