Nikon's Small World competition recognizes the art and science of microscope photography. This year's winning images reveal firing neurons, the vessels of leaves and eyeballs, and colorful crystals ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A type of zooplankton, Daphnia pulex (a.k.a. the water flea) is a microscopic crustacean whose unique ...

Jan Swammerdam, a pioneering Dutch microscopist, first illustrated the 2- to 5-millimeter-long animals in 1669 as minuscule, birdlike creatures with a pointy beak for eating and antler-like antennae ...

Phytoplankton is an important component of the food-web and is predated by a wide variety of aquatic organisms, such as water fleas, copepods and fish. These microscopic algae also play a crucial role ...

Spiny water fleas, another foreign species believed to have crossed the ocean in the ballast of saltwater ships, has been confirmed in Shagawa Lake near Ely. The tiny creatures, which resemble a large ...