Gloeotrichia, a colonial cyanobacterium. Filaments arrange themselves in starlike colonies. Large numbers of colonies can collect in freshwater lakes, forming blooms. Sixth Prize, 2005 Olympus BioSc...

Detail of a pod of flowering legume Scorpius muricatus. Stereomicroscopy, darkfield illumination. Honorable Mention, 2011 Olympus BioScapes Digital Imaging Competition®.

Nucleated erythrocytes from chicken were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shadowed with platinum. Image...

Nucleated erythrocytes from chicken were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shadowed with platinum. Image...

Nucleated erythrocytes from chicken were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shadowed with platinum. Image...

Desmid Micrasterias, a chlorophyceae alga of extraordinary beauty, beginning to divide. Micrasterias have bilateral symmetry, with two mirror image semi-cells joined by a narrow isthmus containing th...

Nucleated erythrocytes from chicken were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shadowed with platinum. Image...

Nucleated erythrocytes from chicken were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shadowed with platinum. Image...

Darkfield image of spherical colonies of Nostoc commune, a bluegreen alga. Nostoc commune is a terrestrial species of cyanobacteria that in 1988 was found to harbor a previously unidentified UV-A/B ab...

Hydra, a simple fresh-water animal possessing radial symmetry, imaged in darkfield. Biologists are interested in hydras because of their regenerative ability, and their apparent inability to age or d...