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Agate/quartz crystals in thin section by wellcome images
Horizontal Cells of the Zebrafish Retina In the image above, cell nuclei (cyan) were stained with BODIPY while the outer plexiform layer is pseudo-colored in red. In yellow are the Cx55.5:M-YFP-labeled horizontal cell precurors.
SEM of rods and cones in the human retina
This is the retina from the eye of the fruitfly Drosophila melanogaster.
Cydonia oblonga, Quince pollen [Rob Kesseler] by Center for Image in Science and Art
Sunrise gleaming off of the rippled sand
microscopic image of the cross section of a sapling.
View of a US Quarter through brightfield polarized reflected light microscopy. Image provided by Marissa Masek, Rochester Institute of Technology, NY USA.
Real Image of T4 bacteriophage (a virus) via electron microscope. pic.twitter.com/bDZY93gjfG
Earth's South Pole