Each year, Nikon holds its Small World Photomicrography Competition, showcasing the wonders of a world we can only see through a microscope. These finalists' photos offer unusual views on everything from rain on a butterfly's wing to fossilized dinosaur bones.

The winners for the 2009 competition will be announced this Thursday, October 8th. In the meantime, you can play a few rounds of Identify the Image with more finalist photos on the competition website.

Small Wonders: Finalists From the Nikon Small World Competition [PDN Photo of the Day via Metafilter]

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Shamuel Silberman, Ramat-Gan, Israel
Embryo of guppy fish (40X)

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Viktor Sykora, Institute of Pathophysiology, First Medical Faculty, Charles University, Prague, Czech Republic
Hoya carnosa (wax plant) flower (10x)

Massimo Brizzi, Microcosmo Italia, Empoli, Firenze, Italy
Snail eggs (200x)

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Daniel Vega, Madrid, Spain
Gall (plant tissue growth) formed by Trigonaspis mendesi (4X)

Karie Holtermann, Rancho Cucamonga, California, United States
Raindrop on butterfly wing (20X)

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Norm Barker, Department of Pathology, Johns Hopkins University, School of Medicine, Baltimore, Maryland, United States
Dinosaur bone, Jurassic period (15X)

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Gerd A. Guenther, D√ľsseldorf, Germany
Sonchus asper (spiny sowthistle) flower stem section (150X)

Fabrice Parais, DIREN Basse-Normandie, Hérouville-Saint-Clair, France
Atherix ibis (fly) aquatic larva (25x)

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Yanping Wang, Beijing Planetarium, Beijing, China
Snowflake (40X)

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Frederique Ruf-Zamojski, California Institute of Technology, Pasadena, California, United States
Zebrafish embryo, 22 hours post-fertilization, living specimen (40X)